Self-operated 20250313

On a plain black background, Plain white top with a single letter, Under the single black letter, Under the plain white letters, Single black-sleeved hat M, Plain white sleeve M cap, Single black center fire cap, Single white center primer, Single black cap fire, Plain white hat fire, double-covered black, double-covered white, Double Mongolian-Tibetan blue, White fire color, black fire color, LEFT LETTER WHITE, LEFT LETTER BLACK