According to a press release, on 20 December 2019, the Trans-Dniester Republican Bank introduced a new 1-ruble note to commemorate the 25th anniversary of the Trans-Dniester ruble. 200,000 notes (B225a) will enter circulation (HB 1002501 to HB 1200000) and 2,500 notes will be sold as numismatic products (BNP217a) packaged in booklets (s/n HB 1000001 to HB 1002500).
Courtesy of Stanislav Gusev and Albert Vokhmin.