I checked that red rear lense and all it says is "made in Japan." No numbers, no DOT, only "made in Japan." These red lenses act as tailights as they are on when driving and the double fillament give me both the tailight and blinkers.

Regarding the full chain guard, an old dealer told me these KO's came with automatic chain oilers. (That is talked about in my owners manaul too.) They would throw so much oil they started making the full guard for it. He said owners would use a screw to plug the oiler. Again, this is what the old Honda dealer guy told me.