I'm selling 4 used but in good condition Hytron 50's. At my estimates, they are at about 80 % of capacity. They have scratches from normal use, but work as they should.
On eBay:
http://www.ebay.com/itm/221097616794?ssPageName=STRK:MESELX:IT&_trksid=p39 84.m1555.l2649#ht_500wt_1359


