Mine d
Bob, Yours has to be an early 3400, when they first came out. Does yours have an adjustable oiler? Seen a few on here. I never had one. Ive got 3 other 3400"s, but none with the adjustable oiler. Another sign of an early model is the smaller screw setup on the rear handle. The air cleaner cover knob on Maintenance supervisor's saw looks like early style also. But those can are easily changed or replaced over the years.
Gregg,
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Mine does have 1979 stamped on all the metal parts , 79 surrounded by the date casting.