The June 2010 update of the BATF C&R list now shows the P-64 to be eligible for Curio and Relic status. J&G has already updated their listings of this pistol, and SOG should have theirs updated on Monday.
The P-64 is a Radom Polish variant of the PPK, chambered in 9mm Makarov. Hotter than .380, but a step down from the 9mm. The pistol is virtually identical to the PPK, solid steel, and is also virtually indestructible. I own 2, and plan to pick up several more since I have an FFL03 license. They conceal very easily, shoot where they are aimed, and have a 7+1 capacity. There are replacement springs available from Wolf to help reduce recoil as well as trigger pull, but personally mine are both stock and I find them as easy to shoot and not punishing at all. Leather is pretty easy to find, as almost every PPK model fits the P-64 like a glove.
I highly recommend this pistol, and those that have tried and love the CZ-82 will find the P-64 much slimmer, perfect for CC, and priced in the neighborhood of $150, it is an amazing value.
you can check out The Unofficial P64 Resource Forum • Index page as the Un-Official P-64 Resource for additional information on the P-64. I love this little Pole so much, it's in my avatar!