T Bolt
Colonel
That is one truly incredible model!! Thanks for posting it Terry
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Ad: This forum contains affiliate links to products on Amazon and eBay. More information in Terms and rules
It's the C of G indicator marker, first used on the 'C' model when the fuselage tank was introduced, and of course to 'B's' retrofitted with the tank.