Several manufacturers and numerous stamp variations are known.
1st variation made by Suzuki workshop.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
Original case.
帝國軍人後援會 - Imperial Soldiers' Relief Association
賛助徽章 - Supporting [Member of Association] Badge
Label of...
Main manufacturer of these badges were Suzuki, Gyokuhō and Tenshōdō workshops.
Quite a few stamp variations are known.
Two pin construction badges.
Photo courtesy of the owner.
1st variation.
Size 20 mm.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
會員徽章 - Member's Badge
Badges made by Tenshodo workshop.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
會員徽章 - Member's Badge
Bow.
Original case.
特別徽章 - Special [Member of Association] Badge
帝國軍人後援會 - Imperial Soldiers' Relief Association
Original outer cardboard case.
Red Rosette Badges.
Badges made by Tenshodo workshop.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
會員徽章 - Member's Badge
Original case.
特殊徽章 - Extraordinary/Exceptional [Member of Association] Badge
帝國軍人後援會 - Imperial Soldiers' Relief Association
Size 36.5 x 44.5 mm.
Weight 11 g.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
通常會員 - Regular Member of Association
Original case.
通常會員徽章 - Regular Member's Badge
帝國軍人後援會 - Imperial Soldiers' Relief Association
佩用心得 - Information Regarding Wearing of the Badge...
1st stamp variation.
Size 36.8 x 44.2 mm.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
特別會員 - Special Member of Association
Original case.
帝國軍人後援會 - Imperial Soldiers' Relief Association
特別會員徽章 - Special Member of Association Badge
Sticker inside the case reads...
1st variation "wide pin".
Size 49 x 43 mm.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
特殊會員 - Extraordinary Member of Association
Marked 純銀 - pure silver.
Original case.
帝國軍人後援會 - Imperial Soldiers' Relief Association
特殊會員徽章 - Extraordinary Member of Association Badge...
1st variation "wide pin".
Size 48 x 43 mm.
Weight 16 g.
Reverse
帝國軍人後援會 - Imperial Soldiers' Relief Association
有功會員 - Meritorious/Merited Member of Association [有功 - have rendered great service/have performed meritorious service]
Marked 純銀 - pure silver.
Original case.
帝國軍人後援會 -...
See also https://asiamedals.info/threads/1905-japan-seafarers-relief-association-prince-arisugawa-takehito-commemorative-watch-fob-1905.26363/
Size 58 mm.
Thickness 4 mm.
Weight 75g.
Obverse
總裁威仁親王 - Prince Arisugawa Takehito
reverse
帝國軍人後援會記念 - Imperial Soldiers' Relief Association...
imperial soldiers' relief associationimperial soldiers' relief association medal
imperial soldiers' supportassociationbadgeimperial soldiers' supportassociation medal
imperial soldiers' supportassociation table medal
prince arisugawa takehito
prince arisugawa takehito medal
russo-japanese war commemorative table medal
帝国軍人援護会記念メダル
明治三十七八年帝国軍人後援会記念章
總裁威仁親王
This badge was made in 1936 in commemoration of 40th Anniversary of Imperial Soldiers' Relief Association.
Reverse
記念章 - Commemorative Badge
Original case.
帝國軍人後援會 - Imperial Soldiers' Relief Association
創立四十周年記念章 - 40th Anniversary Commemorative Badge