Summit Art Glass production is fairly recent (they began in the early 1970s and went out of business just a few years ago when the owner, Russ Vogelsong, died). I will guess at circa 1980s or 1990s production for the Sunbonnet toothpick, but I am sure that other people on the board will be able to give a more accurate date.
Summit bought a lot of other glass companies moulds and frequently produced glass from those moulds, without removing the original maker's trademark (where present). Some Summit glass does have the Summit trademark - a V (in a circle). V is for Voglesong.