How about the H-D sportster in "Along Came Bronson"?
Then Came Bronson (1969-70) staring Michael Parks.
There's an entire Bronson Bike cult 'out there'. Repop Sportsters custom built right down to the last detail. Wasn't there an
Eye of Providence on the fuel tank? Anyway, I'll bet there's several "claimed" originals around... right down to the phony VIN numbers.

Bronson replica at 2010 Barber Vintage days
One episode had Bronson entering a hill climb competition. Off he goes, roaring up the hill, spewing dirt off his knobby tires -knobby tires?. Haf a mo... the lads on a HD Aermacchi Sprint. Oh well...
Driver: "Taking a trip?"
Bronson: "What's that?"
Driver: "Taking a trip?"
Bronson: "Yeah."
Driver: "Where to?"
Bronson: "Oh, I don't know. Wherever I end up, I guess."
Driver: "Man, I wish I was you."
Bronson: "Really?"
Driver: "Yeah."
Bronson: "Well, hang in there."