This has just been taken off my bike, a 51 plate. It's the larger (20 litre) capacity tank for the square headlight Mark 1 600.

There's a shallow dent where the previous owner's knee hit it in an off, hence I've finally replaced it with the one he gave me when I bought the bike from him 11 years ago! It might be fixable if you've got the know-how and the tools. Apart from that and some small wear and tear chips it's in great condition as it's had a tank protector on it since I got the bike.

The ones on eBay at the moment are going for £125 to £175 but don't have dents so I think £70 ono is reasonable.

Postage options: Parcelforce express48 - £16 (2 day delivery by c.o.p.), Parcelforce express24 - £20 (1 day delivery by c.o.p.) or pick up from Milton near Cambridge.

Edit: added photos. You can see the dent in the first one. The white marks on top in the second one are actually the reflection of the can on my bike. You can see the yellow of the number plate as well.

Edit 17/8: I've given up on selling this on eBay due to a buyer who never paid and noone bidding when I relisted it, so anyone who'll take it away can have it for nothing but you'll need to come and pick it up from Milton near Cambridge.

I swapped this engine out years ago (with a lot of help from Gordo) when the output shaft bearings went and, because it's an engine-split job, it was cheaper to replace it than get it fixed. Since then it's been sitting in my garage with a plastic garbage bag over it so it should still be in good nick. I kept it well sprayed with Scottoiler FS365 when it was in the bike and the garage is bone dry.

It had exactly 62,597 miles on it when it was taken out and, to be honest, it ran better and looked better than the new engine did.