For owners of Seeley Hondas with the F-type fuel tank, (where the fuel tap is attached to the rear of the tank, with that double-threaded nut): 
Remember the sexy dual-outlet fuel tap that only came on CB500 Fours and CB550F's?    Ta-da!  I have a brand-spanking new dual-outlet fuel tap for you.See the attached photos. 
The Honda part number is 16951-374-671 and as you may know it's NLA. 
As I already have one on my own bike, this one is for sale. I would like what I paid for it which is $60 plus shipping from Germany.
cheers, Thomas