Size 31 mm.
Weight 15.8 g.
Obverse
警衛記念 - Security/Guard Commemorative
reverse
昭和九年四月 - April 1934
不眠不休 - Never Sleep or Rest /不眠不休/bù mián bù xiū is a Chinese idiom that literally means "without sleep, without rest". It describes someone working or striving continuously, day and night...