In Reply to: 9n air cleaners posted by don b on October 04, 2009 at 09:39:47:
Good to see you posting again, Don. I am just now printing off your post and this weekend I intend to go over the collection and see what variations I have on my collection of '39's and '40's. The oldest '39 that I own is 9N2158, the newest '39 is 77?? (I forget). I also have a fairly early '40 and a mid year '40. I do recall that I passed up a chance to buy 9N9??? (I forget again - senior moments here) about a year ago and it had the round bottom screen top air cleaner.
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