RE: OS Pattern engine question
Skip - This should be in the ballpark. OS 61 SF. The ringed version is more popular, you can usually pick a NIB for $175-$225 range, on auction somewhere, and maybe cheaper. The FSR should be good also, 3 piece case, I have not run any of the FSR.
The above is only my opinion, not saying it is right for everyone.
Crank