If the measurements are what you state,
then one of the final determining factors
is going to be the color...
Although the 544's are derived from three
color families, the dull green variety is
a near certainty to be 544...
A second variety will be a medium green,
but tends to have a strong green border,
as yours does... which you can compare with
the one below, which has been certed... they
appear close to being the same...
(see my next posting for additional information)
http://www.ebay.com/itm/544-USED-VF...em27cee96f41