Hi, all. I need help identifying a gun that's up for sale in one of my hunting forums. I'm pretty sure it's a good deal, but I'd feel better if I knew exactly what it is. I haven't been able to use the the info I have to pin down which variant. The seller has posted a few pics (attached) but doesn't have the box or know much else about it. I've asked him to check, but the barrel looks to be 6 1/2". It's marked Classic and shows that it's a 629-4. The barrel is ported, and it's got rounded grips. I've looked in the Standard Catalog and can't find CBY as a serial number prefix. How unusual is that? Any other thoughts?