Size 33 mm.
Obverse
精勤章 - Diligence Badge
reverse
仙台逓信管理局 - Sendai /is the capital city of Miyagi Prefecture, the largest city in the Tōhoku region/ Posts and Telecommunications Bureau
區内三等郵便局 - Ward 3rd Class Post Office
逓送集配人奨励會 - Postal Delivery Personnel Promotion Association
japanese lapel badgejapanese ministry of communications badgejapanese ministry of postbadgejapanesepost lapel numbered badgejapanesepostofficebadgejapanesepostal service badge
郵政省郵便局章
Assumed attribution. See also https://asiamedals.info/threads/japanese-postal-hat-badges.24139/
Symbol 〒 in the center https://asiamedals.info/threads/symbol-of-japanese-post-yubin-maku-and-its-history.24108/
cap badge of japanese ministry of communications
cap badge of japanesepost
hat badge of japanese ministry of communications
hat badge of japanesepostjapanesepostofficebadge
逓信省帽章
逓信省章
governor-general of korea badgejapanesebadgejapanesepostofficebadgejapanesepostal badge
korea postal badge
korea postal long service badge
勤績章
朝鮮總督府勤績章
朝鮮總督府章
Size 29 x 23.5 mm.
Reverse
逓信省 - Ministry of Communications
Marked with practically unreadable 銀純 - pure silver mark.
Original case.
Case lid
二級 - 2nd class
效績章 - Efficacy/Achievement Badge
Outer case
貳 - 2nd
Made by Naigai workshop...
achievement badge
efficacy badge
japan ministry of communications
japanese ministry of communications badgejapanesepostofficebadge
ministry of communications achievement badge
逓信省二級效績章
逓信省效績章
逓信省文官バッジ
逓信省文官徽章
銀製勲章