Looks like a decent gun, a replica of a Smith and Wesson Model 59. Would be neat to find one. CO2-powered BB repeaters have become a thing for me in recent years. I actually really like the Daisy 5501, which not only has a reciprocating slide, it locks it open after the last round is fired, helping you avoid wasting gas firing blanks.
If you enjoy old Daisy curiosities, you'd probably like the Daisy Model 59 from the company's "SoftAir" line, introduced in the mid-eighties (before AirSoft.) I still have mine. It shoots the same .25 caliber plastic shot as AirSoft, but each ball is first pressed into a plastic replica case that simulates a round of ammunition, and those are fed via a regular, spring-loaded magazine, just like on the real thing. The gun itself is spring-piston-powered, and the real difference in action between it and the "real thing" is that the slide is held open by the spring, not closed. Closing it compresses the spring. Pulling the trigger releases it, firing the ball from the "case" (which is hollowed through to allow the air to pass through it) and ejecting the case. The slide stays open; you have to force it closed again to chamber the next round and cock the mechanism. Like your gun, this is a Smith and Wesson replica. I used to have a (real) 659 and both guns fit the same holsters to a tee.
During the SoftAir line's relatively short run, I believe four models were produced. I remember that one was a 92 Beretta replica. I don't remember what the remaining ones were. Each came with a pack of plastic shot and five fake brass cases. You can't shoot them without the "brass."
I left this one stored with the slide closed (spring compressed) for like 25 years, and it still snaps and shoots quite briskly when the trigger is pulled.