Hello. Gorgeous watch! In order to see if is a 2998-1 or 2998-4 you have to open the caseback to see what reference is engraved on the inside part. Then, look at the movement serial number and compare it to the table with the numbers of Mr Roman Hartmann. You can go to: , scroll down and there you w
Hello. Just being new to the hobby of (trying) to collect such important watches, a big question arises. Where to get the watches? Chrono24 is a realiable source, albeit a little expensive, Ebay is riskier but maybe all depends on the seller . It seems you found two (specially the Porsche) very diff