Y'all asked for the door tag, here it is 1967 Cougar.

Cougar Community The Project Forum
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VIN NUMBER:F91C611343 BODY:65A Color: 8 Trim:2A Date:26E DSO:21 Axle:0

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Wow, thats an oddball. A 6 as the sixth digit? I’d expect a 5…

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Mercury sequence numbers started with 500000 while Ford started with 000 000. So after 99,999 cars were produced the 6th digit rolled to 6. In 67 there were 150,000 cougars built. This car has the 111,343rd Cougar VIN assigned.

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Actually, Ford started with 100000.