"Buxton's Guide to Foreign Firearms", which is basically a collection of catalog copy from the 60's, shows the 450 series guns, but no good photos. By way of price comparison, the 410E was the highest grade typically seen in the States at that time. Cost was $160 retail in Italy. Compare to the 450E ($375), EL ($460), and EELL ($650). Per the information in Buxton's, the 450 guns were all 12ga only at that time.