Seven Gifu Prefecture post offices are using pictorial date stamps for the 40th anniversary of Nagaragawa Railway from 11 November through 11 December 2026. The offices are Seki Sakaemachi, Seki, Tomika, Mino, Gujō-Hachiman, Hokunō and Minokamo Ōta Honmachi.

Japan Post credits Keisuke Shibata with the design, which pairs a railway vehicle with a station nameboard. The Tomika example shows the vehicle head-on beside the sign and carries the post office’s own name beneath the date position. The notices provide for both ordinary posting with the commemorative cancellation and commemorative strikes returned by mail, with separate envelopes requested when both services are wanted. Postal requests for an opening-day strike had to arrive by 9 November; the general mail request window runs through 11 December.

The marking period begins on the same day as local sales of the separately announced railway anniversary stamp sheet. The seven postmark locations are listed individually, while the stamp sheet is sold through a wider group of post offices.