This just makes no sense to me. Any old worn out 743 for sale around here seems to bring a high price. I have seen 763's sell for less than equal hour 743's! Is it the smaller size that makes them more popular? Some of them are over 25 years old. The amount of wear and repair work needed for some is amazing. Then again I get a good laugh out of people who pay thousands for an old M-610. Any ideas?