Postal Dater
Any dater designed for post office use. Usually a round stamp with date slots and local post office identification.

AMI
605 N. Macquesten Pkwy.
Mt. Vernon, NY, United States
10552
Phone: 914-664-2606
Fax: 914-664-1550
http://www.numberingmachines.com

Fox Laminating Co.
84 Custer St.
West Hartford, CT, United States
06110-1955
Phone: 800-433-2468
Fax: 860-953-1277
http://www.foxlaminating.com

Millennium Marking Co.
16 Passaic Ave., Unit 9
Fairfield, NJ, United States
7004
Phone: 973-244-0505
Fax: 973-244-0909
http://www.dedicatedtothestampmaker.com