Tokyo-based workshop.
Known workshop labels.
Workshop mark "hiragana syllable か inside the circle" /reads Ka for Katoya/ together with pure silver /純銀/ mark.
"Kanji 加 inside the circle" /reads Ka for Katoya/.
badge made by katoya medal company
japanese badge case label
katoya medal company
label of manufacturer of japanese badge
watch fob made by katoya medal company
かとや徽章商会
かとや徽章商會
