Whilst cleaning my grandparents loft, I found a record arm. It turns out to be an SME 3009. Although I don't know much about it, I have done a bit of research and they seem to fetching a fair bit on ebay. All I really know is that it is from the 1970's and it works with weights. If I am looking to sell this, what is the best way to go about this? ebay or a specialist? and how much should I be looking at getting?