Stamped numbers on wood frame

[fords]

The numbers, symbol and letter are stamped on the wood at/under the tank lid.
1 800 symbol 1 M. My understanding these are to be indication of month and year of manufacture. I can not figure this out. Any help?
Trying to attach a photo not sure it will.
Thanks

 

[Royce P]

You are looking at it upside down. The W is for Wilson body company. They made Model T bodies from perhaps 1909 - 1914. I do not think there was a date in the numbers until 1915 model year. So the number is W10081. These numbers were used to keep components related to one another so they could be assembled and fit to one another. The same number can probably be found stamped somewhere on the doors.

The numbers, symbol and letter are stamped on the wood at/under the tank lid.
1 800 symbol 1 M. My understanding these are to be indication of month and year of manufacture. I can not figure this out. Any help?
Trying to attach a photo not sure it will.
Thanks