need help identifying mower deck

[Doubletrouble 10]

I have a RD mower, it measures approx. 36" across. I'm trying to find it by the # on the tag but not sure if it's even the right tag, it wasn't attached correctly. anyway, numbers on tag are as follows : 36MRO1-08021 2nd line: 8037

Any help is appreciated. :USA:

[gwest_ca-(File Mod) 11,454]

Your model number is likely a 1978 85-36MR01. The last 2 are numbers zero one. The 8037 is the Julian build date - 37th day of 1978 - Monday February 6, 1978. The 8021 is the serial number.

Garry