Queen Elizabeth II Silver Jubilee Crown Comemorative Coin Mystery

I walked past a coin shop a while ago and they had a bucket full with these and the Churchill crowns sitting outside the door of the shop. (obviously not worried about the possibility of theft!)

Every family seems to have several, I think I have 5-6 somehow too... though legal tender I am somewhat dubious that I could actually convince any shop keeper to take one... (I could mention the diverse nationalities of shopkeepers in my area and their likely unfamiliarity with the coin but I fancy even an Englishman would reject such a coin)

Also I hear that banks are rejecting commemorative coins as someone was dumping huge numbers on them in some sort of fiddle involving nectar points or something meaning that the "legal tender" status is kind of worthless (what use is it being paid for a debt with a coin you cannot bank?)

Anyway, nice and thorough explaination by Sap on the relevance of the design elements. I hadn't really considered the spoon before.