My 12" ATCO had the cast aluminium handles, as well as the long muffler. My only reasons for thinking that combination came before the short muffler are first, some old ATCO information I saw said they didn't make 12" mowers after 1936, and second, the fact that the short mufflers seem quite a bit more common. We've had a number of threads featuring short mufflers on ATCOs that looked like 1950s, and none of them had cast aluminium handles. They often didn't have handles at all, which is consistent with the original ones being pretty flimsy. Off the top of my head I can't recall a picture of a long muffler in an Outdoorking thread.
Edit: Note this is incorrect, ATCO made 12" mowers through the 1950s.
Last edited by grumpy; 10/03/12 10:44 AM. Reason: Correction
