The date is 1972 (Year 47 of Shōwa's reign).
https://en.numista.com/numisdoc/calendar-japanese-34.html
On that page first type in the Emperor (two symbols on one key) then the one or two or three symbols for the year, then end wih the 'year' symbol, and the converter will show the date on top right (I added the purple borders). So you can then put a quantity on the collection page in 1972 year.
I also wondered that if then
1972 47 1 was entered in the Search (1972 and 47 from Numisdoc results, and 1 symbol from coin), would it find the coin, and it did ...
Just in case anyone else has any oriental coins to find!