Indicia title is "MICKEY MOUSE AND THE SUBMARINE PIRATES, No. 141." Code number is M.M.O.S. #141-473. Copyright 1947 by Walt Disney Productions. On-sale date is publication date in Catalog of Copyright Entries, 1947 Pamphlets, page 79.
Apparently Mickey Mouse #3. Credits for this issue based upon Alberto Becattini's "Disney Index - Dell Comic Books" Vols. 1 and 2 (Italy, 1992 and 1994).