Very nice work!!! I'm not so much into the "650" part, but I do like the old school detail work you've done. Not overly done like a lot of "Harley" engravings you see out there. I think it's pretty cool and more or less forgotten art form in motorcycle building.
One of my favorites, the SR400 BSR has "the wheel rims and tank and oil caps have been treated to elegant filigree-style engraving."

Portside builds pretty cool old school choppers and they use some nice engravings.