The print is cool. However, I believe the rips & holes at the top and at the seams would greatly affect the value. As would size (the larger the better). I'm just not sure of it's rarity and whether it's a parking lot bootleg. Maybe Jimmy can help you there.
Awesome shirts. It's the sizes that hurt them. If they were large or XL I suspect they would have sold without a problem. You may have better luck with the consignment path Jimmy mentioned.
Like Jimmy said it can take a long time to find the right buyer. Personally, I've never had much luck with military squadron shirts, even ones with awesome graphics, likely because I was impatient (meaning giving up after 3-4 months). IMO, someone who wasn't part of these units wants to be seen as a...
It being a vintage aviation related shirt makes it much more collectible, with potentially higher upside, than a more common Quiksilver surfing shirt. Just a little research shows that the MX was THE groundbreaking ultralight vehicle which moved the craft beyond being a simple hang glider. If you do...
Being an ironic rarity may put it on a few want lists, but I agree the original without the duplicate would be worth much more. Modern day Jesus shirts aren't in much demand. Most anything after the Middle Ages is overproduced.