There was a good example of this syndrome at the Canterbury Auction Galleries (15% buyer’s premium) on April 15 in a general sale. A rather nicer-than-usual Civil War Royalist silver badge was estimated at £300-500 (about right) except that it attained a goodly £840.
The King rediscovers his head at Canterbury
MOST numismatic material when offered at auction comes up in London. Sometimes this is not the case and then frequently a better-than-usual price is achieved.