I need to create a vector of this for color separations:

http://image.opencartguru.com/cache/data/gettrx_logo-702x702.png

But I can't figure out the font that was the base for GLOBAL.

I can redraw most of the characters by hand, the L and A definitely, the G and O moderately well, but I can't do the B...

So does anyone have an idea of something close to work from, or what it most likely started as?

Thank you!