Specimen from the collection of Raymond LaBar. Photos courtesy of the owner.
Obverse
功勞 - Merit
reverse
贈呈 - [Presented as a] Gift
昭和拾ー年参月 - March 1936
小石川區防護團 - Koishikawa Ward (Bunkyo, Tokyo) Air Defense Corps
This oversized badge has diameter more than 50 mm.
Comparative size...
1936年小石川區防護團功勞章
air defense corp branch badge
air defense maneuvers badges
japanese air defense badge
japanese air defense maneuvers
japanese army badge
japanese badge
japanese military badge
koishikawa ward air defense corps merit badge
功勞章
japanese nightingale merit badge
japanese nightingale merit decoration
japanese red cross award
japanese red cross badge
osaka prefecture nightingale merit decoration
ナイチンゲール大阪府功勞章
ナイチンゲール章
功勞章
Obverse
功勞 - Merit
reverse
大日本防空協會 - Dainippon Air Defense Association
山梨縣支部 - Yamanashi Prefecture Branch
鰍澤部會 - Kajikazawa Town Branch of Association
Interesting that 部 is actually stamped over different kanji.
Case with label of Naigai Medal Co.
dainippon air defense association
dainippon air defense association badge
dainippon air defense association yamanashi branch
greater japan air defense association badge
merit badge
功勞章
大日本防空協会山梨縣支部章
大日本防空協会山梨縣支部鰍澤部会功勞章
大日本防空協会章
adachi ward air defense corps merit badge
air defense corp branch badge
japanese air defense badge
japanese air defense maneuvers
japanese air defense maneuvers badge
功勞章
足立區防護團第一分團功勞章
防護團功勞章
1941 kyobashi ward merit badge
1941年京橋區町會聯合會功勞章
german silver
japanese badge
japanese town and village mayors association badge
japanese town merit badge
mark 洋銀
neusilber
京橋區町會聯合會功勞章
功勞章
dai nippon sangyō hōkokukai
dainippon sangyō hokokukai
dainippon sangyō hokokukai badge
greater japan industrial patriotic association
industrial patriotic association badge
industrial patriotic association merit badge
movement of industrial service to the country
功勞章
大日本産業報国会功勞章
大日本産業報国会章
1940 toshima ward autonomy merit badge
2600th anniversary of the japanese empire badge
imperial japan soldiers' support association badge
imperial soldiers' relief association
imperial soldiers' relief association badge
imperial soldiers' relief association star
imperial soldiers' support association badge
three-legged crow badge
功勞章
紀元二千六百年
紀元二千六百年豊島區自治功勞章
air defense corp branch badge
air defense maneuvers badge
japanese air defense badge
nakano ward air defense corps merit badge
中野区防護團第四分團功勞章
功勞章
防護團第四分團章
See also https://asiamedals.info/threads/1934-air-defense-maneuvers-shinagawa-ward-air-raid-defense-corps-kitashinagawa-branch-participation-badge.25043/
Suspension
功勞章 - Merit Badge
reverse
品川區防護團 - Shinagawa Ward Air Raid Defense Corps
北品川分團 - Kitashinagawa Branch
Suspension and badge...
greater japan civil defense association badge
greater japan keibodan association merit badge
imperial japan civil defense corps
keibōdan
keibodan award badge
keibodan yamagata prefecture branch merit badge
toyo medal works
功勞章
大日本警防協會功勞章
山形県支部大日本警防協会特別功勞章
山形県支部大日本警防協會功勞章
東洋徽章製作所
特別功勞章
imperial japan civil defense corps
japanese ceramic badge
kashiwara keibodan association badge
keibodan award badge
keibodan badge
сeramic merit badge
兵庫県柏原警防協會功勞章
功勞章
air defense
air defense maneuvers badge
air defense maneuvers badges
air raid defense corps merit badge
toshima ward takada no. 5 branch
功勞章
豊島區防護團高田第五分團功勞章
japanese badge
japanese fire brigade award badge
japanese fire brigade badge
japanese firefighting association badge
shizuoka prefecture firefighting association badge
功労章
功勞章
特別功労章
静岡縣消防協會功勞章