Blenko ashtray, early 1970s

This Blenko ash tray measures 5.75" long x 5.5" wide x 2.25" high. I have had this for several years but until I found Blenko's catalogs online, I was not sure it was one of theirs. The bottom has a lot of wear in the form of random scratching. It is a heavy ashtray with thick sides, yellow with amber splatters in the bottom.