GE Condensing Unit Age

A little help on dating a GE condensing unit, I believe its a 1978

SN: 201433715
MN: BTB930A100A0

Thanks in advance

Preston’s lists it 1977-1980. '78 is close enough :wink:

Looks like 15th week of 1977.

I have this same unit. Can anyone tell me how many tons the unit is ? It is a G.E. model #BTB930A100A0 and serial: 231001630


2.5 tons. 1700 sq. or less, one floor, no room returns.