Big Boiler!, need the Age please?

Please help me with the age of this low pressure steam boiler
Big Blue Burnham boiler.

Check here, they have old units listed

Yep, you’ve got a grand-pa on your hands.

The serial number should be 8 numbers long. Some of the older boilers only had 7 digits (like the one you have there) and those are not traceable because it was before Burnham began tracking numbers via computer.

For manufacture dates, speak with Customer Service”