The one in plate 166 of Ysart Glass

(scanned from book, will rescan from transparency at some point) cost around $1200 in 1989/90 - should have been mine, but Parkington got it imported with a batch to avoid tax, when he saw it he changed his mind and kept it. Grrrrrr!
It remains the only snake I liked.
A similar thing happened with the salamander in Ysart Glass Plate 168, same batch, but another one showed up a week later and he let me have one, that one is on the dust jacket of Ysart Glass - of course he kept the better one for himself.
Such is life.