This ship was produced after 1953 but does not appear in any of the catalogs that I have for 1953 thru 1957. The number, that is stamped on the box end, is also odd in that it falls outside of the usual numbering system that Keystone used. It also differs from the similar #357 by having a rear turret instead of a single gun. The ship is 14″ long.
From my private collection.