graphlex 103 Trioptar lens shade?

[Robbie Bedell]

I recently bought a very nice Century Graphic with a 103mm Graflex Trioptar lens. I measured the front and I can't tell whether it is 29mm or 30mm. I have done the research and for the life of me cannot find any reference to a shade for this lens. Does anyone have any knowledge of this. I do have a slip on from an earlier Crown but it is a 31.5 OD slip on and is very large. Thank you in advance, Robbie Bedell.

http://robbiebedell.photoshelter.com