I just found a full set of six Supa Frost 6.6 x 6.6 filters I forgot I had. These never went into rental and are virtually brand new, except of course, Wilson Filter Services disppeared a long time ago. I'll probably put them on eBay if nobody here is interested. But first, does anybody know what they're worth? And speaking of rare finds, I also have an actual, real live 6.6 x 6.6 Mitchell D.
Thanks