I recently inherited a model 64-4 38 special 2 inch barrel. It is stainless with a polished finish. serial number on the bottom of the grip is BBT2XXX it has 350 on I believe its called the yoke ( when the cylinder swings open it is inside the part the cylinder swings on). please just give me any info you know about. I'm mostly trying to get a date on it to see how old it is but appreciate any and all. thanks for the support.