I did come across the GunsAmerica site and saw the listed items and prices.
Did not turn up anything on that serial number as yet, but it seems there is a record somewhere of each one made ??
I'm not a collector, and used that Fox Sterlingworth when I was in my teens !!! It was my Dad's, I went out and bought a Remington Sportsman 58 when I was about 15 or 16 hoping to get him up the bay duck hunting with us - never did though. But did manage to get him into the deer woods each year !!!
I don't think he liked being up the bay in Dec./Jan though he never admitted it !!!
Anyway, for reasons similar to those you mentioned, I just want to pare down the "collection" and I find most aren't worth much anyway.
That Remington Sportsman Model 58 is a nice semi auto, 3 shot but only worth about $300, if that. I wish I could remember what I paid for it back in around 1958 or so !!!!