Need info on ASM 1st model Dragoon

[LEE3370]

Does anyone have an Armi San Marco 1st model Dragoon? I need to know the diameter of the cylinder pin. All I need is the measurement of where the cylinder rides. It is an ASM.
Thanks, Lee

 

[LEE3370]

It is a Whitneyville Hartford Dragoon

Hello to Everyone,
I am finding out more about the revolver that I am rebuilding. It is NOT a 1st Model Dragoon. It is a Whitneyville Hartford Dragoon made by Armi San Marco. NOW can anyone let me know the correct cylinder pin diameter?
Thanks,
Lee