
Leather cases (crocodile back and belly, snake, lizard)
Seal cases and metal frames

Koseido Co., Ltd.
Nishijima 1814-1 Minobu City, Minamikoma District, Yamanashi Prefecture 409-3301 Japan
Our Products
Elegant seal cases with a retro-modern design
In addition to our menu of products, we also welcome orders for individualized seal cases. If you would like to place a custom order, please use the inquiry form or contact us by telephone or fax.
The metal frame is the essential part of a seal case that determines the case’s strength and functionality. All of our frames are made from durable brass and come in three attractive colors of gold, silver, and black.
Our most popular frames, our gold frames feature a bright golden luster.
A silver frame creates a stylish impression of unassuming elegance.
The modern and stylish look of our black frames have made them increasingly popular in recent years.
We offer eight distinctive patterns for the inner lining of the case lid.

01
Vermillion bamboo

02
Crane and tortoise

03
Kotobuki (longevity)

04

05
Currently unavailable

06

07

08
We offer seven colors for the velveteen material housing the seal.

Black

Red

Navy blue

Pink

Deep red

Cream

Purple
Personalized printing is also available. Cases can be embossed with the name of a person or business, or as a commemorative item, such as for school graduation.
・Various typefaces are available.
・Printing may also be of an image, company logo, school emblem, or other design.