I now have three Collins weighted spinner knobs from Advanced Optics. Cost is $100 shipped. If not sold, they will go on Ebay. Thank you David Knepper, W3ST/W3CRA Publisher of the Collins Journal Secretary of the Collins Radio Association www.collinsra.com Join today Nets: 14.263 Mhz, 1900Z, Sundays 3.805 Mhz, 2300Z, Mondays