My dad used a fat handle Tech up until he switched to the Techmatic, though he must have had a short dalliance with a blue-tip SS as I remember finding one in a drawer.
Dude, you just told my story, my dad died 3 weeks ago, wish I had his DE stuff, but long gone
My dad, born 1919, used one razor, a Gem Micromatic Open Comb, for his whole shaving life. His kit was a milk glass mug with Williams mug shaving soap. In the 1950s, he did change brushes to a Ever Ready C40. The blade was always a Gem Blue Star.
About 1972, I asked him why he used the Gem Micromatic Open Comb and not a newer razor? I got a short simple answer. "No other razor gives me as smooth or close a shave."
He died in 1999. The morning before he died, he used his Gem Micromatic Open Comb.
Yes - my Dad had a whole bag of nasty Bic disposables
As I look at my collection of 12+ razors it occurred to me that my father -- for as long as I can remember -- only had his Executive. Just the one razor. Did your father have more than one razor?