Coat of arms lion type m17, 1mk orange, wm posthorn X, A perf.

The coat of arms Finland 1mk orange model m17, posthorn watermark. Designed by Eliel Saarinen.

Different types of this stamp:
131 W watermark posthorn W1, A perforation 14 1/4x14 (1927).
131 W watermark posthorn W1, B perforation 14 1/4x14 3/4 (1927).
131 X watermark posthorn W2, A perforation 14 1/4x14 (1927).
131 X watermark posthorn W2, B perforation 14 1/4x14 3/4 (1927).
131 Y watermark posthorn W3, B perforation 14 1/4x14 3/4 (1927).
131 Z watermark posthorn W4, A perforation 14 1/4x14 (1927).
131 Z watermark posthorn W4, B perforation 14 1/4x14 3/4 (1927).