Need Some Help With The Age Of An American Standard Boiler Please

Inspected a 120 year old house today and need some help with the steam boiler age.

American Standard “ARCOLINER”
No. 0 154-t Series 1BTJ2

Any help would be appreciated, guessing its 50s or 60s at best

The info I have is that American Standard Arcoliner boilers were not made after 1973, so 50’s or 60’s is probably a good guess.

Thanks. I just put it down as functioning but wayyyy past its shelf life.