Fender or "wing" mounted mirrors were common on fifties and sixties European, British and JDM cars.
Keep in mind that most cars of the era didn't come with outside mirrors as standard equipment.
My 1956 Rolls Royce SCI standard steel saloon had wing mounted mirrors as did my numerous Jaguar MKII's and S-Types that I've owned..
I prefer the mirrors mounted on the doors on the W113.
The location actually makes sense when you get used to them as they eliminate the blind spot that door mounted mirrors inherently have.
Also many older cars had crank or push out vent windows in the door that would interfere with a door mount mirror.
The Talbot "bullet" style racing mirrors were very popular.
Talbot's shown on my no longer owned, wish I still had it, 1966 Aston Martin DB6 Vantage Spec: