The $1050 you note is close enough for government work. The condition of the gun is everything----unless it's a 6"/8" version. (Then all bets are off and it's pretty much worth whatever you can get for it!) I can't really tell that much about the condition of your gun. What I can see is the grips are pretty funky, and the rest is need of a good bath----including a good rub-down with bronze wool and oil. If it was me, I'd ship the grips off to one of our grip restoration guru's (DWFan comes to mind) and have them do their thing. I don't know what that might cost, but it doesn't make any difference---it's worth it. Then I'd concentrate on making the rest of the gun look as good as it can (See bronze wool and oil above.) The better it ends up looking, the more you can get for it----nothing complicated.
Some other folks here are likely better equipped to comment on value than I am. I don't sell guns hardly at all. And when I buy one, the price is about the last thing I care about. If I pay too much today, everything will be fine tomorrow---or the day after-----and if it isn't, I don't really care.
Ralph Tremaine
Some strictly personal opinion: I would expect, or not be surprised, to pay at least $2,000 for a like new gun---maybe more. I don't pay any attention to these as they appear on the market----unless it's something really special----and the only really special one I don't have is an 8". Truth be known, I have never even seen a legitimate 8"----and I'm not holding my breath until I do!!