Factory warning tag

[Rainmaker Ron]

I posted a picture of this tag some years ago after finding it hanging on the choke rod of a low mileage 1930 grain truck. Last week a customer brought me a 28 express that had the same tag hanging on the choke rod. Does anyone know the history of such a tag? I have never ran across any mention of these in all my Ford reading.
Inquiring minds need to know!
Rainmaker Ron

 

[1942deluxe]

Ron,I think it may be later.If the C1TT 19C501 A is a part number I'd say 1961 big truck.Still cool though and I'm sure rare,