I am helping an ill friend sell his audio collection. To start, I am listing for sale his beautiful sounding K1000 headphones. This is the actual set which started my appreciation for this unique headphone. I would buy it myself but I already have 2 sets. Serial number is 04255, and from their sound I believe they are the bass-heavy type. As you can see from the photos it is in excellent condition. The only issue with the headphones is the right rear temple pad has a tendency to fall off. I have not yet tried adding any glue to fix it myself. The wood case is in very good condition with only a small mark on the left top edge. Price is $1300 + shipping. PayPal add 3%.