Schwinn Stingray Tandem Bicycle Bike 1968 Mini Twinn - RARE!

Description

Actual item pictured.
The lettering on the bike top tube and chain guard are not the same as a typical production Mini Twinn.
So bike is either a rare version of a rare bike or maybe a prototype? If you have info on this let me know and I will update ad. There is no information online about this variation.
Also, I looked at hundreds of pictures online and can't find one painted black.
Looks to be all original (except for the tires of course).
Very rideable as-is. Nothing bent or broken. Paint has wear from normal use.
LOCAL PICK-UP ONLY. SO YOU CAN JUDGE THE CONDITION FOR YOURSELF.
BUY WITH CONFIDENCE!