These are vintage later 20th century, about 1970s - 1980's, abstract paintings that have had a grainy sand added to the paint for texture. The signature is E. Jones. There is not a match when checking against all listed artists with the first initial E and last name as Jones. These works are intended more for decorative wall art purposes, typically in a corporate or business setting. The works are not intended as fine art investment pieces. The estimate is for an individual painting based on actual recent past recorded auction sales of comparables. Retail 'asking prices' can be higher and vary.