Like some of the others, I've come across lets like this. One was a prewar 224E/2224T (stamped T) diecast tender with the 1941/42 low coupler. Yes, I know the low coupler diecast tender is odd by itself let alone without a whistle in that set. Never been apart, it did come that way. It was part of a brown 2442/43 passenger car set. Same thing, it came from an area with 25 cycle power. These sets were not in our catalog without the whistles but were sold in those regions that could not support the whistles electrical requirements.
Very nice set you have there.
