ROYAL CANADIAN AIR FORCES GREEN FLYERS SHIRT 
SIZE 6744
MAY HAVE SIGNS OF WEAR OR FADING. 
How Canadian 4 digit shirt sizing works
*The first two digits indicate the approximate height of person in inches.
And the last two digits indicate the chest size in inches.
Size 6744
This shirt is best suited for someone approximately 67 inches tall with a 44 inch chest.