Jem,
Thank you for posting the body number. Yes, that is a “B” off to the left of the number. And according to Bruce McCalley’s research on page 476 of “Model T Ford” near the top right column he comments:
“Contrary to popular belief, the aluminum Touring bodies (supplied only by Pontiac Body Co.) were quite common until September 1909. All other bodies were wood and were supplied by Pontiac or Wilson for the most part.”
And at:
http://www.mtfca.com/encyclo/A-B.htm Bruce states: “ Note: Early Ford documents refer to a body manufacturer as “Pontiac.” Research has shown that there was no body manufacturer by that name but that in Pontiac, Michigan, it was actually the O. J. Beaudett Body Company that made these bodies for Ford. Just why Ford documents made this error is unknown. Perhaps it was just easier to write “Pontiac” than “Beaudett.”
Because your car is an Aluminum body and because your shipping document has a check mark by “Body Aluminum” and has Body Made By Pontiac, the “B” in front of your body number has to be for Beaudett (also spelled Beaudette).
If you have a copy of Bruce’s book or CD, you see as early as Mar 3, 1909 a Pontiac (Beaudett) Aluminum bodied touring is noted as being assembled (1,245) and on that same day several other Pontiac (Beaudett) tourings with the wood body were assembled. (ref page 478)
Note your shipping document that has the 8-17-09 date – that is listed as the “Car Assembling” date. On page 476 of Bruce’s book on the right column he states:
“Cars were assembled, obviously, after engines were assembled. The dates shown [in Bruce’s listing] are the dates of the body-to-chassis assembly, a short time after the engine date. In addition, chassis were assembled sometimes days before the bodies were installed. Add this to the fact that here were several assembly areas, and a general mix-up of dates versus serial number occurs. Where an “engine only” is indicated [again in Bruce’s listing], the date shown is the shipping date, not the manufacturing date.”
For those new to the forum, and are thinking they will order a shipping document for their Oct 6, 1911 or later Model T -- you will probably not be able to do that. Those shipping documents are only available for cars from #1 and then #1,119 (Mar 3, 1909) to approximately number 70,750 (Oct 5, 1911). There are other ledgers that contain about 22% of the serial numbers from 1903 to Dec 1914 or possible a little into 1915. But if you have a late 1915 or later Model T, there are no known records at the Benson Ford Archives that would list when it was produced. Why? It is believed those records were destroyed in a fire at the archives that happened last century.
Below is a Beaudett body number that is stamped on the bottom of a 1908 Model S Roadster mother-in-law seat. Thank you to Andrew Brand for providing that photo.

- Andrew Brand's 1908 Model S Roadster rear seat body number
Now that you have removed some of the paint, I would believe that you can now see your car's body number by raising the front seat cushion and looking down at the front of wooden seat frame that is in front of the gas tank. But rather than me assuming that, would you please confirm that is where it is located or let us know where it actually is located?
You have a special car and thank you so much for sharing your discovery.
Respectfully submitted,
Hap l9l5 cut off