This is an original artwork by Jael (1937-2020) created to illustrate the short story by J.R. Dunn, published in Amazing Magazine, page 74, March 1993. (I show the published page for reference) It's an interesting science fiction time travel tale, hand painted in oils on illustration board, 14" x 11" signed bottom right in the image and custom framed to 20" x 16.75".