My curiosity is officially piqued.
I have lately been buying up some lots of Japanese yen "vacation money" for roughly the exchange rate, to cherry pick and flip back at exchange rate again. To my surprise, there have been more than a few old style coins which I did not think actually circulated when these coins were gathered (usually 90s or 00s, based on the newest ones in the lot).
For those who don't know about the circulating coins of Japan, here is a quick snapshot of the history of their coins. As a rule of thumb, 1 yen is worth a little less than 1 US cent, but that value has been rising steadily from the original Bretton Woods fixed rate of 1 yen = 0.36 US cent.
Showa (Hirohito) era, 1926-1989
1948-49 - Two-year series of bronze 1 and 5 yen, followed by a short break in all coinage production except the 5 yen.
1 yen (aluminum) - introduced 1955, unchanged until 1989
5 yen (brass) - introduced 1949
1949-58 old style script
1959-89 new style script
10 yen (bronze) - introduced 1951
1951-58 reeded edge
1959-89 plain edge
50 yen
No hole design - 1955-58
Holed design - 1959-66
Cupronickel, small size - 1967-89
100 yen
.600 Silver, phoenix design 1957-58
.600 Silver, rice design 1959-66
.600 Silver, olympics 1964
Cupronickel, 1967-89
500 yen (cupronickel) introduced 1982
Heisei era (since 1989)
1, 5, 10, 50, 100 yen - no change
500 yen was redesigned and changed to aluminum bronze in 2000 to add security features
The lots understandably contain a lot of coins from the period of relative stability in these designs. Reeded 10 yen show up sometimes, usually in the ones that lean toward older coins. What gets me is that a lot of these lots contain both styles of large 50 yen pieces, which have not been produced since the 50s and 60s. 500 yen coins are not common, but are usually of the cupronickel variety when they do show up. Some lots contain commemorative 100 yen coins, but commemorative 500 yen are usually sold individually for 2-3x face value.
So for our members who use these coins on a daily basis, what can you add about what frequently turns up? How common are Showa versus Heisei coins? Do you ever see old varieties, silver, or the large size 50 yen? Are the old style 500 yen completely gone? Do commemoratives ever actually circulate, or just get listed on
ebay?