I would want more information than just a serial number. Serial numbers can be hard to read, let alone go on the number alone to base a purchase on. Even if the serial number is correct (and not some other part number) there have been SOME errors in the serial number lists. Granted the errors are probably minimal. I encountered a machine in a thrift store and looked up the serial number and knowing the problems with some "G" numbers I quadruple checked and the model listed for the serial number I was looking at was not the actual model of the machine I was looking at. I wish I had either taken a picture or written it down.
Rodney's and Joe's avatars are similar to the model 15 Singers. The tension assembly is on the nose. If it is a 15 from 1902ish it would only have a screw to adjust the stitch length. As mentioned above if it is from that era it would be a treadle. Decals (both style & condition) could also be an influencing factor in determining 'worth' of machine.
Janey - Neat people never make the exciting discoveries I do.
Last edited by OurWorkbench; 10-07-2015 at 06:39 AM.