ray Posted October 7, 2012 Posted October 7, 2012 Hi, i believe this is a 1 fen coin. I have looked up many but can not get reference to one with marking in the square in picture 3.Is it a different date ? Quote
TomGoodheart Posted October 7, 2012 Posted October 7, 2012 Yup. I believe your coin is from the Provisional Government of China (ie Japanese puppet government 中华民 ) Year 28. Which if I'm correct is 1939.http://en.numista.com/numisdoc/calendar-japanese-34.html Quote
ray Posted October 8, 2012 Author Posted October 8, 2012 Yup. I believe your coin is from the Provisional Government of China (ie Japanese puppet government 中华民 ) Year 28. Which if I'm correct is 1939.http://en.numista.com/numisdoc/calendar-japanese-34.htmlHi, 'TomGoodheart' thank you for your input, very helpful. regards. Ray. Quote
Debbie Posted October 11, 2012 Posted October 11, 2012 I clicked on this expecting to see a ceramic coin! Got me wondering what other materials coins have been made from.... Quote
TomGoodheart Posted October 11, 2012 Posted October 11, 2012 I clicked on this expecting to see a ceramic coin! Got me wondering what other materials coins have been made from.... LOL Depends on whether you consider barter items to be 'coins' Debbie. All sort of things were used as money via barter. I have some Hudson's Bay trade beads. Made in Venice they were exchanged at the rate of three beads for a beaver pelt. A rifle would cost its height in pelts.Seashells (cowries and 'tusk' shells (wampum)), quartz stones with a hole in the middle and blocks of tea, were all used as currency at some point. And although even nowadays coins are afaik all metal, things like trade tokens, ticket checks, gambling checks (chips) have been made out of al sorts of materials such as plastic, mother of pearl, wood or paper. Quote
Debbie Posted October 11, 2012 Posted October 11, 2012 Yes you are right Richard and there are a few out there - look what I found!here Quote
declanwmagee Posted October 11, 2012 Posted October 11, 2012 These are rather fantastic...Coins made from the Elements of the Periodic Table Quote
Peckris Posted October 11, 2012 Posted October 11, 2012 These are rather fantastic...Coins made from the Elements of the Periodic TableBut get in early on the helium coins - the values keep rising Quote
Debbie Posted October 11, 2012 Posted October 11, 2012 Wow now that is different! Looks like Rhodium is the way to go...... but calcuim? Quote
TomGoodheart Posted October 11, 2012 Posted October 11, 2012 Wow now that is different! Looks like Rhodium is the way to go...... but calcuim? Oooh! Real James Bond stuff! Snap open the Calcium, drop it in water and stand well back! Quote
scott Posted October 12, 2012 Posted October 12, 2012 lol.calcuim coin in UK..... go to market, open pocket... poofHelium coin? wonder if they will make a 1 OZ one of those...oh and my ceramic coin got another i havn't upladed yet. and i tink my dealer has some PAPER coins Quote
Debbie Posted October 12, 2012 Posted October 12, 2012 What size is that Scott? Paper sounds interesting - are they emmbossed? Quote
Rob Posted October 12, 2012 Posted October 12, 2012 Wow now that is different! Looks like Rhodium is the way to go...... but calcuim? Oooh! Real James Bond stuff! Snap open the Calcium, drop it in water and stand well back!I think you mean Caesium. Quote
Rob Posted October 12, 2012 Posted October 12, 2012 These are the metals from which coins have been struck in this country that I've identified so far to be included in the collection. METAL TYPEAluminiumAluminium-BronzeAntimony - Probably doesn't exist. Freeman gives P2114 as Sn/Pb 2:1Barton's MetalBillonBrassBronzeBronzed CopperBrown Gilt CopperCadmiumCopperCopper/BrassCopper/Nickel-ZincCopper plated SteelCupro-NickelGilt CopperGold Gold 20c (0.8333)Gold 22c (0.916)Gold 23c (0.9583)Gold Fine (0.979)Gold Fine (0.992)Gold Fine (0.994)Gold Fine (0.995)IronLeadNickelNickel-BrassPalladiumPewter (various alloy ratios)Phosphor BronzePlatinumPotin (Cu/Tin alloy)Silver 0.999 fineSilver 0.958 fineSilver 11oz3dwt (Ed.VI)Silver 0.925 fineSilver 0.921 fine E1 5th issSilver 0.916 fine (11oz)Silver 0.833 (Ed.II)Silver 9oz2dwtSilver 8oz2dwtSilver 6oz2dwtSilver 0.500Silver 4oz2dwtSilver 4ozSilver 3oz2dwtSilver Plated CopperSteelTinZinc Quote
Peckris Posted October 12, 2012 Posted October 12, 2012 These are the metals from which coins have been struck in this country that I've identified so far to be included in the collection. METAL TYPEAluminiumAluminium-BronzeAntimony - Probably doesn't exist. Freeman gives P2114 as Sn/Pb 2:1Barton's MetalBillonBrassBronzeBronzed CopperBrown Gilt CopperCadmiumCopperCopper/BrassCopper/Nickel-ZincCopper plated SteelCupro-NickelGilt CopperGold Gold 20c (0.8333)Gold 22c (0.916)Gold 23c (0.9583)Gold Fine (0.979)Gold Fine (0.992)Gold Fine (0.994)Gold Fine (0.995)IronLeadNickelNickel-BrassPalladiumPewter (various alloy ratios)Phosphor BronzePlatinumPotin (Cu/Tin alloy)Silver 0.999 fineSilver 0.958 fineSilver 11oz3dwt (Ed.VI)Silver 0.925 fineSilver 0.921 fine E1 5th issSilver 0.916 fine (11oz)Silver 0.833 (Ed.II)Silver 9oz2dwtSilver 8oz2dwtSilver 6oz2dwtSilver 0.500Silver 4oz2dwtSilver 4ozSilver 3oz2dwtSilver Plated CopperSteelTinZincYou've included several alloys there Rob - shouldn't the "Silver 0.500" be amended to show the various compositions of silver alloy used from 1920 to 1946 (and 1986)? Quote
Rob Posted October 12, 2012 Posted October 12, 2012 These are the metals from which coins have been struck in this country that I've identified so far to be included in the collection. METAL TYPEAluminiumAluminium-BronzeAntimony - Probably doesn't exist. Freeman gives P2114 as Sn/Pb 2:1Barton's MetalBillonBrassBronzeBronzed CopperBrown Gilt CopperCadmiumCopperCopper/BrassCopper/Nickel-ZincCopper plated SteelCupro-NickelGilt CopperGold Gold 20c (0.8333)Gold 22c (0.916)Gold 23c (0.9583)Gold Fine (0.979)Gold Fine (0.992)Gold Fine (0.994)Gold Fine (0.995)IronLeadNickelNickel-BrassPalladiumPewter (various alloy ratios)Phosphor BronzePlatinumPotin (Cu/Tin alloy)Silver 0.999 fineSilver 0.958 fineSilver 11oz3dwt (Ed.VI)Silver 0.925 fineSilver 0.921 fine E1 5th issSilver 0.916 fine (11oz)Silver 0.833 (Ed.II)Silver 9oz2dwtSilver 8oz2dwtSilver 6oz2dwtSilver 0.500Silver 4oz2dwtSilver 4ozSilver 3oz2dwtSilver Plated CopperSteelTinZincYou've included several alloys there Rob - shouldn't the "Silver 0.500" be amended to show the various compositions of silver alloy used from 1920 to 1946 (and 1986)?Probably, but that is a research project in itself given there was usually little or no controls over the purity of the additives. I have used the nominal finenesses as proclaimed or indentured in the case of the precious metals. Any trials in lead or tin are likely to have varying degrees of the other element as impurities, but there would likely be no strictly adhered to specification for metals such as this. Metals other than those indicated in the indentures are therefore quoted as observed with no regard for the accurate percentages. I could probably add a couple more for the variation in bronze during the war and immediately afterwards.Even in the case of some nominally sterling standard silver issues there was variation in the fineness, for example, the Civil War coinage was never pyxed although an attempt appears to have been made to retain the standard. In practice though, this was variable as different prices were paid for touched and untouched plate, but you can rest assured that all the silver brought in would be used. The figures for York halfcrowns analysed by Besly (BNJ 1984) show that the purity of the silver varied from 91.1% to 93.2% with varying amounts of copper, gold and lead together with other traces in the mix. Touched silver could be melted and used without assay, but other silver needed to be refined. The figure higher than 92.5% was probably due to the inclusion of ducatoons or similar in the raw material, as these were 0.940 pure. Quote
scott Posted October 12, 2012 Posted October 12, 2012 (edited) there are other silver ammounts around the world.russia used .900 US silver dollars are 90% so perhaps some of ours are around that now as wellthe paper one is french, so about the same size as a predecimal penny Edited October 12, 2012 by scott Quote
declanwmagee Posted October 12, 2012 Posted October 12, 2012 Wow now that is different! Looks like Rhodium is the way to go...... but calcuim? Oooh! Real James Bond stuff! Snap open the Calcium, drop it in water and stand well back!I think you mean Caesium.Yes. Calcium fizzes a bit, but nothing scary like the Group 1 metals Quote
copper123 Posted October 18, 2012 Posted October 18, 2012 "puppet" government - kind of reminds you about the lib dems Or should that be muppet Quote
VickySilver Posted October 18, 2012 Posted October 18, 2012 I have seen pure elemental calcium ignite and nearly explode in the chem lab. That and sodium I remember...Egyptian 1920s gold .875 based on the pattern proof 1922 KG V florins that experimented with gold alloys.... Quote
azda Posted October 21, 2012 Posted October 21, 2012 I like the Mercury one... Would'nt like to lick it though Quote
Gary D Posted October 27, 2012 Posted October 27, 2012 I like the Mercury one... Would'nt like to lick it though I'm struggling to read the denomination on the Mercury coin.Can't wait for the Uranium and Plutonium. I wonder if you will be able to keep them at home. Probably keep getting EDF knocking on the door to see if they can borrow it. Quote
DaveG38 Posted October 27, 2012 Posted October 27, 2012 I like the Mercury one... Would'nt like to lick it though I'm struggling to read the denomination on the Mercury coin.Can't wait for the Uranium and Plutonium. I wonder if you will be able to keep them at home. Probably keep getting EDF knocking on the door to see if they can borrow it.You wouldn't want to keep them in your pocket! Quote
Gary D Posted October 27, 2012 Posted October 27, 2012 You wouldn't want to keep them in your pocket! I don't know, could be useful for keeping the old tadpoles in check on a Saturday night out. Quote
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