welcome to the garage repo, we like pictures here - one way to tell for sure what you have is visual details

the numbers are CDN, so you won't find much info on the net, except folks here will tell ya the Maple leaf was based on the GMC

I think the 1683 should be a 2.5T w/ 174" w.b.
S/N: 9[year= '49] 1683[model= 2.5T cab/chassis] 00149 - the production sequence number

the rest of the codes will be near impossible to decipher for CDN production

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics