Found one here, pretty sure I have another elsewhere… this must be a large hub? I also noticed my crank pin is not slotted for a screwdriver where Charlie’s is.
(Attachment Link)
(Attachment Link)
(Attachment Link)
That is definitely a large hub flywheel and could be transplanted directly to a model 5 or 25. That engine strikes me as unusual since I can’t remember ever seeing a later brass tag 35 with that flywheel. The ones I’ve seen are earlier with the Jensen decal and what I call the “herringbone” cord.
I assume it’s original as it’s very clean/unmolested looking other than needing a polish and light cleanup… I see the second one I posted has the herring bone cord.
Pretty sure I owned that engine at one point. Lol
Maybe I sold it to you or bought it from you??
Pretty sure I sold it to Jan… @classixs is your memory better than mine?? 
I sold it to you and then you sold it to Jan. I remember having a conversation about how that engine was really racking up the miles. 🤣🤣