Federal Boiler age???

Could not find a serial number, Is the series number the same?
Model # TC-140
Series #2651T

Yes, but how old it is is anyone’s guess. My guess is “very old.”

No telling how long a boiler will last.
I took care of many over 100 years old.

The house was built in 1965, and I see 65 in the series #…So my guess its original…