Similar to the GI-40 except that the word GENL has an L instead of a period like the GI-40 has, and just the word GEN like the GI-40A has. The inscription of lettering is spaced differently ( Longer) then the 40 and 40A on both sides of the flask. There are 4 buttons on Taylors Coat with a wide gap between the 3rd button and the bottom most button.The colors this flask is available in are as follows: Aquamarine,Pale Blue,Cobalt Blue,Deep Olive Green, and Pale Yellow Green.The flask below is in the Gerard ( Jerry ) Dauphinais collection