Out of all the 1903 version rock island built just north of 300,000 between 1903 to 1919. In good condition you should expect easily between 1000 and 1500 but at auction it could go much higher, which i believe would happen, depending on year and the serial showing what branch or ship it went to. The 1500 is a quick minimum value sale if you are cash poor, I wouldnt take less unless i absolutely had to personally. If you want to send me photos i can give you a better idea, i will give you my number though larryd is a bit sharper than I am on them and might have some input. I would hesitate parting with, i am just rebuilding my grouping and a rock island and smith corona are on my list.