Jump to content
British Coin Forum - Predecimal.com

50 Years of RotographicCoinpublications.com A Rotographic Imprint. Price guide reference book publishers since 1959. Lots of books on coins, banknotes and medals. Please visit and like Coin Publications on Facebook for offers and updates.

Coin Publications on Facebook

   Rotographic    

The current range of books. Click the image above to see them on Amazon (printed and Kindle format). More info on coinpublications.com

predecimal.comPredecimal.com. One of the most popular websites on British pre-decimal coins, with hundreds of coins for sale, advice for beginners and interesting information.

Platinumskies1

Unidentified Variety
 View Profile  See their activity

  • Content Count

    47

  • Joined

  • Last visited

Posts posted by Platinumskies1

  11. Posted

    24 minutes ago, Rob said:

    It still doesn't offer a quantitative assessment of cameo which should be present if you are to offer an opinion on it and simultaneously take on the mantle of 'God'. Given the willingness of people to cough up large amounts of additional cash for a person's thoughts on a thin sliver of paper, I stand by my argument that there should be some measurable quality used to substantiate the attribution.

     

    What do you think of this rob it seems like pcgs have no idea what a cameo is 

    F87CCE01-1ACB-4966-8393-84C3018E6B1D.jpeg

    B549BFF9-5FF6-4506-B281-2C13CD736AE6.jpeg

    • Like 1

  20. Posted

    On 13/11/2017 at 8:23 PM, VickySilver said:

    The general production of proofs to my understanding is for there to be special care in die production, whatever that means - presumably that means the choice of die , the engraving of the design. Then the die is "pickled" in a strong acid giving an overall frosted appearance to the die.

    The die is then polished; the high points/surfaces will be the field, the lower points on the die are the devices and lettering, mottos, etc. which will remain frosted. As the die is used to strike successive planchets, there is die wear and eventual loss of frosting even of the devices. This then results in the loss of cameo frosting unless the die is reprepped. Presumably the first struck coins have the most cameo frosting which is then lost. This is also the reason that different lighting can make a particular specimen to appear to retain more frosting or cameo to the devices, etc.

    I thought the devices of the die and soon to be coin where sandblasted to get the cameo effect 

×