The serial number indicates it's a 15K from 1911. Keep in mind, there are sometimes differences between K made machines and US made machines. Based on the date it's not an IF machine = which is basically a very early 15 design. I have noticed some variations between US and Scotland made machines. Different factories and not exactly the same tooling. I don't think the 115 was made in Scotland - I think it's a safe bet that the hand crank is a 15K (oscillating bobbin) and not a full rotating bobbin machine. The hand crank is worth more than the machine.

Also, the amount of slant on the GW machine is indicative of the 15. the 115 sits about level. I'm sure they just put something under it to keep it from tipping over, and it's small enough you can't see it (not like my ladle).

I waste too much time looking at pictures of sewing machines trying to figure out what they are LOL!! It's a good thing I have two monitors to use.

thanks for talking me down. i needed that! Glitzy as they are, I can't say I'm wild about em,