Comparing Cowabounga's beautiful (Western Knights) heraldies and this Samurai 'Mon' (also printed by Cowabounga
),
Japanese Mons are more simple and monochromatic.
The Samurai were not too concerned with exclusivity of their Mons which were just for indentification on battle fields.
The "Katabami" type of Mon is made up of heart-shaped leaves that form a flower,
used by Sakai, Mimura, Chosokabe, Matsudaira, Tokugawa(1829) samurai(s).
This particular Mon, the "Ken-Katabami"
is also known as the "Ronins' Mon"
(a Ronin is a masterless samurai)