Well, I'm just stumped. I never heard of any Czech-developed pistol issued to their military after WWII until the CZ-52. I do know that sometimes the little .25 ACP CZ-45 was stamped "47", but that's obviously not what you're showing. Of course the Czech arms industry was working throughout and after the war with hardly a break in production, whether directed by Czechs, Germans or Soviets. They certainly must have been working on new models, just as every other country was, and maybe this is it. I thought that with the influence of the Soviet government, they had been guided into production of the CZ-52, which certainly was the issue arm after that date, but I don't know of any Czech gun that was in use between 1945 and 1952 such as you cite here. I don't question your citation; I just don't know about it. It looks like a CZ-38, and apparently has the same double-action-only feature, but the introduction of a presumably locked breech pistol firing the 9mm Para cartridge in Czechoslovakia is just unknown to me, prior to the CZ-75. I've never seen it referred to or an example of one anywhere, either here or in the US. Maybe they exist in eastern Europe somewhere. Interesting read, and thanks for posting it.