OP
thanks Jim, yours is #146.
I'd be interested to see if the box has a rubber stamped date in the top like my nickel steel frame, sn 60096. Mine has a date of Oct. 28, 1971 stamped with one of those adjustable date type stamps, but according to Roy it was originally shipped in Aug.1964.Just saw an interesting nickel 39, 60353. Nickel controls and #box.
The letter states it left a blue steel frame and shipped back to be nickeled.
Apparently owner had a service manager buddy. AH!, the good ole days.