J

J: Postage Due. Scott catalog number prefix to identify stamps other than standard postage.
JET PRESS: Another term for offset printing of stamps. First used by the USPS for the 33¢ blue Lincoln envelope issued June 5, 1999.
JET SILHOUETTE: The US 7-cents air mail issue showing the silhouette of a plane.
JOINT ISSUE: Two or more countries issuing and releasing a stamp or set of stamps with a similar design on the same day.
JOINT LINE: Caused when the edges of two printing plates do not meet exactly on the press and the small space between the plates absorbs ink and prints a line.
JOURNAL STAMPS: Stamps that have been issued for the express purpose of prepaying postage on journals, newspapers, magazines, etc.
J P A: Junior Philatelists of America.
J P S: Japan Philatelic Society
JQ: Parcel Post Postage Due. Scott catalog number prefix to identify stamps other than standard postage.
J S D A: Japan Stamp Dealers Association
JUBILEE: A special anniversary, usually divisible by 25. The Jubilee stamps refer to the 1935 Silver Jubilee issue of King George V.
JUBILEE LINE: Line around the sheet margins first used during Queen Victoria's Golden Jubilee in 1887.
JUDENPOST: Ghetto stamps issued for the use of Jews interned in concentration camps.
JUMBO STAMPS: Stamps with wide margins. Also referred to as Boardwalk Margins.
JULEN: Term for Christmas on Danish seals.
JURY: Judges at a stamp show.