The very early recoil starters indeed have a round knob, but by the early 60's, new ones had the t-bar.

ontop of this, many round ones have at some point in there life been replaced with t-bars during repairs, the starters that once had them can be identified by the bolt on top.

I would love to one day get my hands on the old round handle starter.

[Linked Image]

Cheers
Ty

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