The headlight glass comes as a one-piece unit with the reflector. The lens (glass) is bonded to the reflector (plastic). I think what Ernest did was separate the lens from the plastic, and glue the replacement glass to the original reflector.
The headlamp unit (lens plus reflector) is about $65 dollars in partshop.
anthony
p.s. You really have to shove hard to get the blinker clip to reinstall.
p.p.s. Be careful around old plastic, it gets brittle, and likes to break.