Originally Posted by
treadigraph
They may be registered as DC-3s but weren't they built as C-47s?
About half of them were (so are still technically C-47s).
The ones registered as "DC-3C-R-1830-90C" are a bit of a giveway (R-1830 is the military designation of the Twin Wasp) and were formerly C-47Bs. In addition there were two former C-47As, designated "DC-3C-S1C3G".
The other 10 were built as DC-3s/DC-3As.