The first CZ50 pistols were made at Strakonice from 1950 through 1952 when production was paused to concentrate on the military CZ52 pistol. Production resumed in 1957 at the Uherský Brod factory and ended in 1970.
I have a CZ50 stamped 58, which means it was made in 1958. The markings on the slide, and frame beneath, in the OPs pics are not of the same era as my CZ. We need pics of both sides of the entire pistol to properly identify it.
My slide markings look like this
If it's a CZ50/70 the takedown button should be forward of the trigger guard, on the frame, on the ejection side of the pistol.
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