Hey,
Bought these off here a while ago now. Don't really need them and there just sat on my desk doing nothing.
They were sold to me as "G40" spec valves, though I don't know how to tell that.
They certainly don't look the same as my other non-G40 items in terms of the shape of the back of the head.
£60 ONO + postage
Picture shows 6 valves because I have the other two at work...