It’s a pre-production car, meaning it was built before the assembly line was operating.

It’s a pre-production car, meaning it was built before the assembly line was operating.

Only 150 pre-production Mustangs were built in Allen Park, Mich.

Less than 10 pre-production Mustangs are known to exist today.

Bruce Beeghly’s 1964 Mustang has the distinction of being one of the earliest pre-production Mustangs known to exist today. Nate Miller and his team at Buckeye Automotive Restoration spent more than 700 hours documenting proof of the claim.