Japanese Commemorative Set? - Please Help Identify

Sorry about the spam post, Pam. It's been dealt with. They don't normally target newbie threads like this.

Now, for your coins.

The ones with square holes in them are indeed from the Edo Period; the large oval-shaped one is a 100 mon, the one with the "waves" on it is 4 mon, and I think the other two are 1 mon coins. The style of these coins are copied from CHinese "Cash" coins, though the legends are distinctively Japanese.

The others are all more modern coins, issued either before or during WWII.

It's an "unofficial set", as opposed to a set put out by the government or the mint, so it's not going to be worth anything extra as a "set"; it would only be worth the sum of the values of the individual coins in the set. It probably dates from the 1950's or 1960's, from the style of it.

The value of the coins will depend on the condition of the other side, the date (in some cases) and whether or not the set holder has reacted with the metal in the coins in any way (I've seen sets from Taiwan from this same time period where something in the plastic or cardboard caused the coins to go all rusty around the rim).

OK, I'm back home with my books now, so here's the identites of all the coins, as near as I can make out. The big one is #1, then numbering left to right, from top to bottom. For all the 20th century coins, a closer look at the side with the most number of Japanese characters on it (which is always the other side to the side showing in the above pic) will let us know the date. Coins I've called "common" are worth no more than a dollar or two.

#1: 100 mon, as mentioned above. These were cast from 1835 to 1870. CV about $10, though they often sell for less. It should have two small stamps on the rim, at the left and right sides.

#2: 4 mon, as mentioned. This one is slightly older than the "typical" 4 mon coins we see; there are 21 "waves" visible, and the "21 waves" type was cast in 1768. CV about $3.

#3 and #4: 1 mon coins. The type was cast from 1628 right through to 1870. There may or may not be a mintmark on the other side.

#5: 1 sen, dating from sometime between 1916 and 1938. 1927 and 1929 are the scarcest.

#6: 10 sen, 1920 to 1932. None are particularly scarce.

#7: 5 sen, same time period as #6. 1920 is slightly scarce.

#8: 50 sen, 1947 and 1948 only. Common.

#9: 1 yen, 1948 to 1950. None are particularly rare.

#10: 10 sen, struck with ever-diminishing weight from 1940 through to 1943. The 1.2 gram, 1943-dated variety is quite scarce, but improbable.

#11: 5 sen, same time period and weight diminution as #10. The 1.0 gram 1942-dated variety is slightly scarce.

#12: 1 sen, 1941-1943. All varieties are common.

I happened to have the exact same set - they sure look nice in such set.