Rarely seen for sale!! C.S. KNOWLES made BRIGHT BLUE CD 263 PATENTED JUNE 17 1890 "COLUMBIA" helmet insulator in EXCEPTIONAL CONDITION!! Two needle point ticks, left ear tip matchead flake, micro open ear edge bubble and a side inner skirt 1.0" open bubble are the only flaws!! $ 525.00 includes shipping. Lets try this at a steep discount! How about $ 425.00 shipped to you!!