If you examine the label:
...you'll see the keeb went through the hands of a third party, which even claimed it was their "product"—so who knows where the label came from?
Model Fs don't
have labels like these, so I'm guessing this system configurator, or whoever they were, made their own IBM-style labels to stick on so they could include their own name, and didn't bother getting the model right—probably because most of the keebs they provided
were Ms at that time.