Trying to confirm 1911 designation

[Steve Hammatt]

I have a customer (for my leather license plates) that has a Chalmers Model 30 that is believed to be a 1911 model. 

The i.d. information we have is:

On the top of the transmission is cast into the plate "Model K", then stamped into the same plate, next to the K is "-M"

I'm assuming that this is a K (1910) transmission but used in a M (1911) vehicle.

Also, on the firewall is a brass plate with "333" stamped as the i.d. number.

On the back of the engine block, stamped into a cast boss is "15426" (although difficult to read in photo provided).

Is there any reason to doubt this being a 1911 model??  This all came about so that the license plate number to

be selected will match the correct number range for the calendar "year of manufacturer".

Thanks.

Steve Hammatt

www.leatherplates.com