So, I've been all over this forum reading and found tons of amazing information. I tried to talk him out of it but he insists it needs to be sold. My father-in-law has (what I've determined based on info here) a prewar 38/44 HD from 35/36'. The serial number is 45661 no S preceding it. From what I gather he got it from his dad, who got it from his twin brother, who they believe purchased it new. He seems to have no interest in doing the paperwork and trying to track down information. I'm just trying to get an estimation as none of the shop around my area seem to deal in older firearms.