Any backglasses left?

Still 4 glasses there that might be right down your alley, 1949 United Showboat, 1957 Wms Jigsaw, 1955 Gtb Frontiersman (1000 units made) and 1958 Gtb Contest.  (1100 units made).  I didn't really appreciate the age of these backglasses until I looked them up.  Bugger me, the oldest one is 61 years old.  There is something special about the Showboat backglass - pretty isn't a word I like to really use but it is.....well.....pretty cool.