I don¡¯t have a 10¡± of any vintage, but if you are relatively certain that the bed is the original one, then Serial Number above about 009000.? I say About because we have a gap from a 10D @ 008635 and a 10F @ 009552.? The other significant differences between the two (3/4¡± dia. lead screw, 2-piece carriage, power cross feed, etc.) are common upgrades.? The tailstocks are also different, but we don¡¯t know for certain that the change over coincided exactly with the model change.? And of course, it¡¯s an easy swap.? The headstock changed in 1942 and most 10F¡¯s will have the newer one.? But not all.? And judging by what happened with the MK2, all of the changes probably didn¡¯t happen on the same day.
Does anyone in this group have a 10F lathe in the configuration as it was originally sold? I guess the catch is how does one know it is a 10F? I wouldn't have known my Atlas is a 10F were it not for being told it is one. Stan