Got a 10-8 this morning and I really believe it has not been fired or carried. Cylinder has a line around it. I've bought quite a few new revolvers in my 78 yrs. and once they have been fired there are tell tail signs. Test firing at the factory usually does not show once it is cleaned and ready for shipment. I cannot find any on this revolver. The line around the cylinder probably came from someone playing with it at various times. I believe it is a later model. First 3 letters of the ser. no. are AUF10XX Case hardening on the hammer & trigger is very crisp. No box, tools or paperwork, but it did come with 100 rds. of Winchester 130 Gr. FMJ ammo. Fellow I got it from took in on a trade deal. Couple pictures attached:

