3-11-17. So far all I know about Jetter bikes is that they were a "B" brand of Shogun bicycles from Taiwan. This bike is probably from the early 1980s. The distributor wen bankrupt so they appear to be rare. I can find no reference to a 15 speed model. One site suggested this may have been an ealry stab at a mountain bike. Note one of the tires does say "Mountain Bike"
Update 3-14-17 I finally found a photo(s) of the bike in a 1986 catalog (see catalog photo below), Looks like a combo of two of the models. It now makes sense about the 1986 license sticker. Guessing it was a then a new purchase. The bikes were imported by Frederick Wilkins & Associates, Inc of New Jersey. It appears they were entry level.
3-21-17. Found this blurnb on a Craigslist ad from Phoenix that was posted back in November, 2016 that references a 15 Speed Jetter that has expired so the photos that were posted, except one of the IOIO sticker, are not available. "Nice 15 speed "Jetter" Bike. Made in Somerset NJ. This is a well sought after commuting bike. Been garaged for 10 years and only needs new tires and tubes. 100.00 as is. 150.00 if I replace them. This bike goes for 400.00 to 500.00 on eBay and they sell as soon as they're posted. Get it as it will go fast. "