I have a question I hope someone can help with. A regular EICO AF-4 sold yesterday on ebay for $600. Nothing special, had not been reworked, in fact, very little detail for such a price. Today i was looking and saw a few Fishers from same era with BIN for $200-300. I have always heard that Fisher had a great rep in the 60s. I am surprised why it is worth so much less than a name most people dont even know. What gives?