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Just checking in w/ a few thoughts on this.
To confirm, you have No; VIN/Lic. Plate #/Prev’ Owner Info/know Original Selling Dealer?
You've dug deep for old Photos w/ Plate #/asking friends/family for pictures too?
No luck finding old Parking/Speeding Tickets/Insurance paperwork + tried contacting them?
Did he ever service it or get tires anywhere still in operation/VIN on file?
Your post notes it was a 350/2 Bbl. Esprit but is the original Color known?
When and where did he buy it also was it advertised then or how’d he find it?
As others noted above, your Dad’s still young so keep digging and best of luck!
~ Pete
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