You can puzzle all you like, but I don't know what the shapes are any more than you, but they do seem to have a form. Is there some sort of pterodactyl there? A whale? Maybe there's an aardvark?
Actually, I do know exactly what the shapes are. They are bits left over after I cut out the letters for the desk sets that I made. Does that explain the name as well?
I get odd shaped off-cuts of silver all the time, but there seems to be some particularly interesting ones this time so I had a little play. The almost-regular shapes seemed right to form a background, some careful soldering and some hammer-point texturing and there you are.
It's quite long - about 80mm - but still just below hallmarking weight, but I had it marked anyway.
Anyone think the top one reminds them of Piglet? No? Just me, then.