If you are the owner of this machine parked on the sidewalk in front of Wells Fargo bank, you deserve a mighty high five. I spent 10 minutes gawking at your bike this afternoon - it is beautiful. Hoping to find the owner to know if that single shock setup was a custom job, and if it was done locally in the bay area.
For the rest of you, no I don't have pics (me = dumbass). I greatly apologize.
This bike was i think a late 70's R100. Black and absolutely spotless. It had the throttle cables going directly into the top of the carbs, never seen that before. It also had both rear stock shocks gone, replaced with a very slick single shock + reservoir arrangment tucked up between the battery and seat, with some bracing welded onto the swingarm for the single. It all looked extremely clean and tidy. A sharp machine that looked like you could jump on and ride cross county without hesitation.