Old Divorced Transfer Case ID? Passenger side front output.

Sorry I've been kind of fumbling loading these photos. I picked up this T-Case the other day and I'm trying to find out what it came from. Early GM I'm guessing, and btw yes I do want to sell it. Turns just a little roughly but has no oil in it, shifts in and out of 4x4 but I couldn't get the hi-low shaft to move. Didn't try very hard. What do ya think? Thanks, Matt.