.I.D.Rear Help

Can some one ID the rear in the attached pic?...I know it is a posi...but what years?...Thanks in advance ...Miller

 

Looks like a '55-62 Chev rear. A bigger pic with the whole thing showing would help.

 

It is a 61-64 because of the 812 housing but The date would tell exactly when it was cast. The ratio is coded on the opposite side, stamped in with 1/4 inch stamps and it is a Flint ***embled rearend because of the thin "P".