Original advertising postcard that was commissioned by the main resellers of these Mint-made commemorative medals and watch fobs - Shobido workshop /尙美堂 寶飾店/ https://asiamedals.info/threads/mark-on-japanese-orders-who-and-when.25816/. Mint was the sole manufacturer of these medals and sold them wholesale to a different general stores.
According to the postcard official name of these commemorative memorabilias
皇太子殿下海外御巡遊記念章 - His Royal Highness the Crown Prince's Overseas Tour Commemorative Medal.
Table medal /made in bronze and silver/ official name is 第一種記念牌 - 1st Type Commemorative Medal/Plaque (we gonna call them table medals).
Watch fob /made in silver and gold/ official name is 第二種記念章 - 2nd Type Commemorative Medal/Badge (we gonna call them watch fobs).
The design of this medal was made by the Tokyo School of Fine Arts, the portrait was bestowed by the Imperial Household Ministry, and the ship's appearance was carefully engraved from a photograph provided by the Navy Ministry.
Diameter of table medals was set at 60.6 mm /第壱種記念牌 直径二寸サック付/.
Diameter of watch fobs was set at 24.4 mm /第弐種記念章 直径八分サック付/.
The price of the bronze table medal was set at 1 yen 20 sen in gold.
The price of the silver table medal was set at 8 yen 70 sen in gold.
The price of the silver watch fob was set at 80 sen in gold.
The price of the gold watch fob was set at 19 yen 50 sen in gold.
Bronze table medal.
Bronze.
Size 61 mm.
Thickness 5 mm.
Weight 98 g.
Obverse
皇太子殿下海外御巡遊記念 - His Royal Highness the Crown Prince's Overseas Tour Commemorative
Obverse signed "S.Nakano". Most likely this is Nakano Sozan (中野双山; 1881-1940) who studied sculpture at Toyama Prefectural Technical School (now Toyama Prefectural Takaoka Technical High School) and Tokyo School of Fine Arts (now Tokyo University of the Arts).
Details.
Reverse
大正十年三月三日 - March 1921
Marked on the rim 造幣局製 - made by Mint.
Original case.
皇太子殿下海外御巡遊 - His Royal Highness the Crown Prince's Overseas Tour
記念牌 - Commemorative Medal/Plaque
According to the postcard official name of these commemorative memorabilias
皇太子殿下海外御巡遊記念章 - His Royal Highness the Crown Prince's Overseas Tour Commemorative Medal.
Table medal /made in bronze and silver/ official name is 第一種記念牌 - 1st Type Commemorative Medal/Plaque (we gonna call them table medals).
Watch fob /made in silver and gold/ official name is 第二種記念章 - 2nd Type Commemorative Medal/Badge (we gonna call them watch fobs).
The design of this medal was made by the Tokyo School of Fine Arts, the portrait was bestowed by the Imperial Household Ministry, and the ship's appearance was carefully engraved from a photograph provided by the Navy Ministry.
Diameter of table medals was set at 60.6 mm /第壱種記念牌 直径二寸サック付/.
Diameter of watch fobs was set at 24.4 mm /第弐種記念章 直径八分サック付/.
The price of the bronze table medal was set at 1 yen 20 sen in gold.
The price of the silver table medal was set at 8 yen 70 sen in gold.
The price of the silver watch fob was set at 80 sen in gold.
The price of the gold watch fob was set at 19 yen 50 sen in gold.
Note the numerous differences between the obverse of the medal shown in the advertising postcard and the obverse of the actual medal /and the same goes for the watch fob/. Also the postcard medal does not have the medalist's signature. Most likely, initially several versions of the medal were considered.
Bronze table medal.
Bronze.
Size 61 mm.
Thickness 5 mm.
Weight 98 g.
Obverse
皇太子殿下海外御巡遊記念 - His Royal Highness the Crown Prince's Overseas Tour Commemorative
Obverse signed "S.Nakano". Most likely this is Nakano Sozan (中野双山; 1881-1940) who studied sculpture at Toyama Prefectural Technical School (now Toyama Prefectural Takaoka Technical High School) and Tokyo School of Fine Arts (now Tokyo University of the Arts).
Details.
Reverse
大正十年三月三日 - March 1921
Marked on the rim 造幣局製 - made by Mint.
Original case.
皇太子殿下海外御巡遊 - His Royal Highness the Crown Prince's Overseas Tour
記念牌 - Commemorative Medal/Plaque