JCM 70: 1960 Maruten Grey Pitching Back

I've included below an uncatalogued one I saw on ebay:

JCM 65: 1957 Maruya Color Menko 1

I've included below here an unlisted example that I found on ebay.

JCM 57c: 1960 Maruya Green Pitching Grip Back

JCM 57c: 1960 Maruya Green Pitching Grip Back is another in a number of varieties featuring a cool pitching grip/advice backside. There are at least 33 cards in this set, and I've included some that seem to be uncatalogued as of yet.

JCM 57a: 1961 Maruya Green Pitching Grip Back

I'm including below an uncatalogued one that I believe belongs to this set that I saw on ebay:

JCM 42b: c.1959 Marusan Simple Back, Border, Info Back

Tanaka

Balbon

Iida

Takakura

JRM: Uncatalogued #37

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #36

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #35

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #34

JRM: Uncatalogued #33

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #31

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #28

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #26

JRM: Uncatalogued #25

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #24

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #23

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #22

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #20

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #19

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #18

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #16

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #14

There are a number of uncatalogued round menkos. This is one group that I've put together.

JCM 12a: 1959- Marusan Simple Blue Back

Not sure which of the JCM 12 sets these belong to:

JCM: Uncatalogued #13

There are a number of uncatalogued sets that I've found so far. This is one of them.

JCM: Uncatalogued #9

There are a number of uncatalogued sets that I've found so far. This is one of them.

JCM: Uncatalogued #6

There are a number of uncatalogued sets that I've found so far. This is one of them.

JCM: Uncatalogued #1

There are a number of uncatalogued sets that I've found so far. This is one of them.

JCM 107: 1948 Scoreboard and Player Uniform with Number Back

JCM 107: 1948 Scoreboard and Player Uniform with Number Back features 8 cards, 1 11/16" x 2 5/8". One of a number different menko series that feature a scorecard, this one should have a small cartoon of a player, and a scorecard at the top. However, my cards do not have this. They instead feature the back of JCM 182. Either this is a printing error (doubtful), a new uncatalogued series (possibly?) or JCM 107 has a couple of options for the backs of the cards (in which case, it probably needs a new name for the series).

JRM: Uncatalogued #10

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #9

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #5

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #4

JRM: Uncatalogued #3

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM: Uncatalogued #2

There are a number of uncatalogued round menkos. This is one group that I've put together.

JRM 60: 1948 Numbers on Tiles

JRM 24: 1947 Math Equation in Circle

JRM 24: 1947 Math Equation in Circle has at least 26 cards that are 1 7/8" in diameter. This time, the math problem is in a small circle. I especially like Kawasaki's card with the goose. I'd assume this was a prize for being the best at something, and it would eventually end up as dinner. There are a few generic baseball cards in this set, and I've included another uncatalogued one here.

JRM 22: 1947 Red or Blue Borders

JRM 22: 1947 Red or Blue Borders has at least 16 cards, 1 7/8" in diameter. They are recognizable by math problem in the curved box at the bottom. I've included here one uncatalogued card that I've found (though this one has a rock/paper/scissors symbol in a small circle, instead of a manufacturer's symbol).