He's 95 now, and still doing fine.
Well done sir
Just before they folded he was working on a ultra long range Douglas DC-4 for the Argentine Government.
He doesn't know what happened to it.
This is just a "best guess", but if it was the 1950s folding of Skyways (they had multiple financial mishaps !) then it could well be DC-4 frame 7454, which was delivered in early 1951 to the Argie Air Force as 4T-1, transport number 1 in the AF transport fleet so likely to be the VIP aircraft. It had been used a bit by the USAF at the end of WW2 but then went back to Douglas for several years, presumably unused, so had pretty low hours by 1950. Also later used by the Argentine Navy, it was withdrawn in the early 1960s, then sat at an air base for 20 years before being broken up in the 1980s.