Sony MDR-R10

For Sale the legendary Sony MDR-R10
These were bought in 1989, low serial number, so light bass.
They were kept in the box since then and used a couple of times at most, because the original owner bought 2 R10.
They are mint, some marks of aging at the rubber portion next to the cups, so I prefer conservatively grade them 8/10 instead of 9/10.
Absolutely no scratches.
Has all accessories, seen at the photos.

I am located in Portugal (Europe), I prefer a face to face deal, and can travel in Europe to deliver them in person.
I do not have any feedback at Audiogon,but I have good feedback from selling expensive watches (Rolex, IWC, ...).
As a watch collector I could accept as part trade a Rolex sportswatch +cash (only if face to face deal).
Payment preferred in euro currency, price in euro is 4600€