I have a Dura Ace FC-7710 Track Crankset for sale.
BB is 109.5mm in BSC thread
Includes Dura Ace Chainring bolts
I bought them when I was testing different length cranks for the kilo TT. Only ever been used indoors and, as you can see from the pics, they have had limited use (I only rode the Kilo and the 3km Pursuit with them).
Perfect for the TT or Pursuit.
Crankset retails for around £270 and the BB for around £50.