It looks like it would be a very late war pistol. Here is some information "Czech Pistols" by Berger
Serial numbers 1-20,499 prewar and early war, up to early 1941.
Starting with serial number 20,500 all pistols diverted to German war effort (early 1941) and that year reached serial number 42,000
In 1942 almost 100,000 pistol were produced
In 1943 almost 200,000 were produced
In 1944 about 77,000 were made
In 1945 about 23,000 were made up to the end of the war. The last serial number produced during the war was 473,000
Post war production resumed and continued to slightly over 620,000 in all.