As close as I can figure. 1941 model 9n started with a one piece aluminum dash. Then was switched to a one piece cast iron dash. Then as serial# 80770 (still in 1941) switched to a two piece cast iron dash. Does anyone know at what serial# they changed to the one piece cast iron dash? I have the 1941 9n with the one pc. aluminum dash and am trying to figure out the serial# (ballpark) since I can't read the engine #s.I know I ask a lot of Questions but I can't help myself this history stuff is very interesting.
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