Effective close-of-business June 30, 2018, all Post Offices™, stations, branches, postal stores, vending outlets, and authorized philatelic centers must:
1. Completely withdraw the stamp stock items and all associated products listed in the table and their related vending and store-prepared stamp items from sale, and
2. Prepare them for destruction.
Submit items to destruction sites according to local established procedures, under the guidelines in Handbook F-101, Field Accounting Procedures, and subchapter 11-6, Returning Stock to the Stamp Distribution Office or Stamp Distribution Center.
Do not permit sales of the stamp stock items, products, and their related vending and store-prepared stamp items listed in the table at retail counters and outlets after June 30, 2018.
— Stamp Services, Marketing, 5-24-18