Many 19th century nickel proofs can have a satiny feel to them when they have original, thick patina. Here are a three-cent nickel, Shield nickel and Liberty nickel.
Here's a couple more proofs, probably more unique and off the beaten path than the beauties on here. 2008 Belarus Sedov Sailing Ships 2010 Canada Dromaeosaurus $4 Silver
Thanks man, I'm not big on the Holograms on coins deal. But on this particular piece, I think it's appropriate for the theme.
Almost bought one of these today but ended up getting 2 1986 statue of liberty half commeratives instead (both pcgs ms69s one regular one dcam)