The only markings I can see are on the inside "B1 is stamped and circled and also "66" is stamped. It is the lock from a casement window.
Bob from SWISCO responded:
March 24, 2022
Start out by looking at our 38-095 and 38-139 and let me know if either of these are a good match for this lock. Make sure to carefully compare the specs we show to your own hardware.