Seems you may have a penchant for ‘antique cars,’ though opinions differ and year on year vehicles are slowly nudged into the next category….
I find the most sellable/desirable classics those that appeal to to a person at a comfortable point in their life who want to relive their youth or maybe couldn’t afford such a vehicle way back then, but can now, often way cheaper than the price of a new car today.
BUT……owning a classic needs deep pockets, love, patience and lots of attention. A bit like having a wife. But more fun.