How much were they asking and were they straight? Don't need them but that would explain your comment. It is one thing if they are $25 each and another if they are $900 each, if they are the second case they are not that rare.
17" rims were ALSO standard equipment on 1935 Ford's - In Germany at least. NOTE "Riider" middle bottom - 5.50 X 17 picture #2, I suspect that the majority of "leftover" 33-34 rims where shipped to Germany for liquidation of inventory.