On Ebay in the US this bass if it's in good condition and includes the power supply, 5-pin cable and case might go for between 2,200 and 2,800, or an average of maybe $2,500USD. That's my guess; there are some other club members that follow prices more closely than I that might have a better estimate. Prices and availability are of course different in Europe. Perhaps some of our European members can give you a good estimate in Euros. As Kevin said, it's a very nice '77 Series I. However, looking at the pictures a little more closely, it looks like there may be some problems with the finish which would lessen the value. It's kind of hard to tell.