It is the buyers responsibility to examine all items to determine if an item is safe for use The buyer accepts all responsibility for use of items purchased
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We have some of these that appear to be take-offs from what we guess were NOS derailleurs but not certain. In any case, this is a great way to get bolt that isn't scrapped up for a great price! There could be very minor shopwear from being in a bulk package, but the bolt you get (not shown in the photos) will be a world better than a used one that's been out and about scuffed.
Campagnolo part #811/A - the lower tension bolt for a Nuovo Record rear derailleur. Appears NOS as best as we can tell. We have a small number of these. A great way to freshen up your current derailleur if it has scrapes and blems or rust.
Note that the very earliest Nuovo Record rear derailleurs used a shorter version than the one offered here. Not sure what year the change happened - it's probably the very early ones that don't have a bushing that sits under the bolt that requires the shorter version which we on't have. The one offered here is the typical one used from early 70's thru the mid 80's.