I'm a little surprised by the that worn 1927 florin going for over £80 but not too much. You have to take into consideration that the mintage is low and most of the coins were not circulated. On top of this, as Peckris said, there are no standard florins/threepences dated 1927. Therefore, it is quite rare to find these in low grade. I guess its a similar with the wreath crowns and even the 1970 proofs. Its something I do not think that Spink or coin dealers have picked up on. I bought a 1927 threepence for £10 last year from a well known dealer at the Wakefield coin fair. The only problem was it had two holes in it! However, I bet if I put in on Ebay, it would sell for at least double what I paid.