Ashton – Boston 1947 Mack Model L Pumper Engine 25, AH16. Hand made in the U.S.A, by Ashton Models. Metal diecast construction features many fine details and removable parts. This highly collectable piece is must have for any serious Boston diecast collector. All Ashton Models are retired and were hand built in very small quantities. Our Ashton stock all come with the original packaging. Some Ashton stock may have been store display models kept under glass and away from natural light, and some stock have never been removed from their original box. 1:43 scale.