1958 Leon Beaux Mailer,3-5/8" x 7-3/8 with 8 fold-out pages.The cover and 3 pages are shown.The text,describing the manufacture of the shells & listing the specs,is written in Italian,English,French and German.The smudge on the cover is a stamped date of which i can make out the "58 RECV". Very Good+ Condition with a couple edge nicks