This set of carbs is from Mark's stash: https://www.ducatiforum.co.uk/threads/marks-stash.91650/ They are filthy, but the slides and Butterflies move smoothly. I've not stripped them to see what jets are in them, but they will fit the Monster or SS 600, 750, and 900 with the correct jets fitted. Crucially, both carbs have their little Black Rubber bungs intact over the Air screws, and having tested them I can confirm that both screws move freely on their threads. I'm sure many will understand just how unusual that is. Because I'm happy that the Air screws are not siezed, despite the cosmetic condition they are £100 plus £7.50 P&P within the usual UK limits. Please be aware that it will take me a few days to post them. They can be collected from Clanfield Hants, or possibly Havant Hants if the timing is right.