This is an original vintage interior illustration by "Freff" - also known as Connor Freff Cochran -  born Jeffrey Scott Cochran (but legally changed his name to Freff in 1976).  The art illustrated the story by Spider Robinson "Overdose" published in Galaxy Magazine, Sept issue, 1975.  Done in ink on scratchboard, image 12" x  9" and is matted to 15.5" x 10.5" -  signed freff BL