Stefan's brakeset most definitely did not leave Vicenza together. It appears to have been made up from elements from different brakesets. The complete calipers do look like they are a pair and original and from the first generation. I agree with John that the adjuster o-ring looks to be a pump part. The set that I have in my possession right now have a "normal" o-ring like subsequent Campagnolo brakes. I have heard persistant rumors that some fake first generation brake calipers have appeared out of Boston and California where somebody has simply filed off the lettering and re-anodized. I suppose that you could do this, but you would also need to get an original center bolt too as they were different in that they say Brev. Camp on them (not found on later brakes). So I believe that Stefan's are correct. To my eyes, it also appears that the loops in the first generation caliper springs seem tighter and the spring slightly smaller gauge. They also did not yet have the "rondella dentata" (toothed washer) on the center bolt.
For the levers, these definitely do not belong to the brake calipers, but are nonetheless collectible in their own right. I believe these to be the first generation Super Record levers made in the first half of the 70's, not upon laucnh of the brakes in the 60's. The first generation brake levers have a lighter colored anodizing on the body and a slightly different shape body (on Stefan's you can see the darker anodizing color). They also have a round access hole on the rear side of the lever blade to feed a brake cable that is absent on later levers as well as Stefan's.
Lastly, the price is a bit high but not completely crazy. I believe the Japanese bidders were correct in asessing a fair market value, but then these do not come around all that often, so if you want something and it is quite rare, the only way to ensure getting them is to pay. The going rate for a set of 1st generation calipers seems to start at around $600 if they have the proper center bolt (I would advise against purchasing any of these brakes without the original center bolt due to the apparent existance of fakes.) The first generation Super Record brake levers generally go for over $100. Therefore if the whole set were indeed correct, meaning calipers and levers, with good lever hoods and brake pads, a price of $1000 would be reached quite easily in my opinion.
Steven Maasland
Moorestown, NJ