As per another thread I started, S2227xx is a 28-2 3 screw.

So a 28-1 would need to be earlier.

The other 3 screw is S223655. I went by and asked so I could letter it before I get it out of layaway.

Speedo2- You didn't get the rest of that S2211xx's serial by chance? We getting to around 1000 guns for the change.