Source for Nikon AI Coupling Prongs?

I recently received a Nikon 35mm f/2.8 AIS lens from a friend but it unfortunately didn't come with a coupling prong for Non-AI cameras. I'm planning on buying an original Nikon F in the the very near future and would like to use this lens with it. I was wondering if anyone knew where I could get a prong for the lens.

I have a couple of Nikkor lenses with prongs I don't need (I use them on an A7R, so the prongs are mostly a nuisance).
PM me your address and I'll send you one for free. Better that someone gets use of it than me geting it caught inside my camera bag lining...

PM sent.