Your 1911 was made in 1931. It is identical to the commercial 1911 45 ACP pistol in appearance. The internal differences are the 38 Super barrel, breechface and a 9 round magazine. It may have the Swartz safety which is a firing pin block. The values are:
excellent-$3600, very good-$2400, good-$1400, fair-$1100, poor-$800.
Add 20% for the Swartz safety.
You can try removing the scratches with a small amount of rubbing compound and then touch it up with a cold blue. The only way to remove them completely is to polish them out along with the rest of the gun and have it reblued. Refinishing the entire gun will take away from the value and can get expensive. I would try the compound and cold blue.
I hope this helps you,