a real RVZ is always going to be expensive and elusive you will need $3500 / $4000 as a starter there are a couple on e bay which a search will bring up ,but I would always get Roger Epperson to check anything first as a UK peddler of questionable signatures for want of a better word was selling items a few years ago through some of the lesser auction houses and his own site and I know Roger is aware of his style so would be able to spot him he usually included with any sale some form of old paperwork like a tour sheet or telex/fax from their tour manager to try make a buyer more comfortable so be very carefull before buying anything as these items were numerous and went far and wide