Concept BRAND
mn/SB42SA-3A
sn/9893L17239
Thanks
3.5 ton
1989 or 1998…dont have Preston’s guide nearby right now.
1989
Mark and Chris
Thanks for the info. Do you guys have the preston’s guild? Where can I find this info on my own?
i have preston’s guide on paperback.
not sure where/if there’s a free database somewhere.
key to identifying tonnage by model #:
within the model # will be a # divisible by 12 and/or 6
in this case, the 42 in the model number tells me it’s 3.5 ton
3.5 x 12 = 42
Very nice! 
Like Chris said, m = tons, and only serial numbers have age… thanks Todd