With a serial number above 10000, yours is a 1926 model. The NS’s all used the brass tank, but the aluminum lower unit N switch to the pressed aluminum tank in 1924 (I think, sorta, kinda). Tom Manley might be able to give you better insight on that.
The one in my demo video was just above 9000, which made it a 1925.
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...
