I came across this at a garage sale:
Is is worth anything? Does it have some interesting history?
The text reads: Wind Proof It fights against the wind whenever you ride your car keeping window down
Followed by: No. 5858
On the underside is says: Sang Xin
Which when I googled it found some old E-bay auctions – some sold of $50, but others only for $10.
I think it takes butane gas