What is this handle?
 

There's a Original on Ebay and in the pic there's a handle by the seat, is it for the brake or is it just a handle to hold on to for mowing hills or something?

Here's the item number on Ebay 110929575942 I'd send the link but computers hate me LOL

I don't think I have ever seen any type of operating handle like that on any "O" I have seen. It does not appear to have any pto at the rear so it must be a PO add on for one thing or another. Maybe it came from WVA, they have some pretty steep hills back in them thar hollers down there. Seriously if it is not an operating lever I would guess possibly it was used by a handicapped operator to assist somehow for mounting and or dismounting.

That handle on Non-IH. Probably some fabricated device by a Previous Owner.

I believe that thar is an umbrella holder.:bigthink:

It's a hat holder?

4th gear?:bigeyes:

Pull the cap and stick a flag in it for a parade?
:American Flag 1:

2nd vote for an umbrella holder...and holy patina mobile!

It's an Oh crap I'm mowing on a hill side and I'm sliding!:biggrin2: