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Maybe not the best for those just starting out, but https://www.numisbids.com is great for searching many online auction house listings in one go.

Silver I presume, wt. 2.54g, the obverse appears to be a late 18th century George III bust or similar, with a trace of DEI GRA in front; the reverse with a central crown, S bottom right, legend ending in REX and possible date 40 or a symbol to the right of a final figure of date. Absolutely dire and fit for the bin, but it's bugging me. Ta.

Absolutely, so much more depth to coins Ive had for 30 odd years an only now I'm beginning to really appreciate them. 👍 so much to read and learn , cheers "H"

You’re having a good root around the forum…as educational as any book on coins for sure!

it would fit in well with my worn out eclectic coin collection, I feel for it as well. 👍

All three coins require basic conservation to optimise their potential, but all are nice detector finds. Individually, a dedicated numismatic auctioneer is unlikely to take them on. The tealby has an exceptional portrait, but is marred by the edge chip though it remains the most desirable. Dobunnic units in uncleaned condition may struggle to hit £50, I would see if it can be improved - most detecting clubs have someone who could advise, the aluminium foil/ alkali method often works well. If I had to sell, I would offer these for via Ebay or Facebook, set a reserve or price if you wish and see what happens. But as a long-standing detectorist myself I would say keep them, and find the upgrade money elsewhere - you will always regret selling your best finds. Jerry

Get yourself a copy of Coins of England as this gives the most comprehensive coverage from Celtic through to the modern day. It doesn't have to be the latest (2025) unless you want ballpark current prices. For id purposes, any copy from the last 15 years would be fine, but bear in mind they split the pre-decimal and decimal coins in 2015. Any copy 2014 or earlier has them combined. Go too early and the picture quality and quantity are somewhat lacking.

Looked back over this site some more and a couple of observations: - did not see ANY 1929 proofs, even of the crown - there is no 1945 currency threepence, or proof of that type (non-Maundy) - the 1945 year coins did not show any proofs to my eyes - there is no 1952 currency or proof halfcrown - there is a proof 1963 halfcrown, none for 1964-67 - there are some proofs of pennies and larger denominations up into the 1960s (Hello Richard!) - some of the coins from the 1960s whilst not proof are either early strikes or somewhat "specimenish" but not well care for - this site may not be complete but seems to support my hypothesis that there were no proofs (or at least no evidence) for the years 1929, save the crown, or for 1945 and helps to explain why I have not seen any in all these years.