Jeff,
Ok, you have a 216...makes sense now.
Your serial number 21RD05 13785 breaks down as follows;
21 = Janesville, WI assembly plant.
RD = 1936 Utility, 157" wheel base, 1-1/2 ton with Dual Wheels.
05 = May
13785 = Unit number starting at 1001.
The first RD from Janesville was built on October 8, 1935 and the last was serial number 21RD08 17221 built om August 21, 1936.
I found a vent pipe cap and will mail it out on Monday.
Take care.
Mike B
