I don't know of any published sn data for commercial CZ products.
The lower the serial number the younger the pistol is
What model?
NO
Depends on the model and serial number.
Go to: www. proofhouse.com with serial number.
1922
1978
Buy one of the books that has published serial numbers for that particular pistol.
1978
Will need model name to answer.
PC0327
made about 1923