Identify year of mintage of 10 Sen Japan [решено]

Anyone can help to identify the year of this 10 sen (1940-1943) Japan

try this:
http://macollectiondemonnaies.ifrance.com/Calendrier/Calendriers_et_autres_chiffres.htm

Is it just my computer or does parts of the characters on that link page appear on top of each other, and so some are hard to read ?! Anyway, I think it is as follows ...
 The date can be four or five or six characters long - and is made up of two characters for the emperor then some number characters and ends with a character that means date. Also some coins have them reading left to right, and some (like yours) are right to left. Look for the 'date' symbol so you know which way to work it out. That symbol is used to literally show that the number is a date and not just a number e.g. 16 by itself is just 16 but 16 date means the 16th year of reign. Also mathematically the start year took me a while to work out, as there is no year 0 as such. So as in 1926 that was the last year of Yoshihito and the first of Hirohito then for him 1926 is the first year (so year 1) which makes 1927 year 2 etc. So when adding reign numbers remove 1 from the first year e.g. 1926 becomes 1925 so that 1927 is 1925 + 2 therefore.
 I took some time also to make a jpeg as per below, which shows the last four emperor's symbols and how the numbers work, and included for you a picture of your coin in it, to show how I worked out it is 1941
 Hope I got all that right !

Thanks guys, with the help of 7475laurent 9I arrived also to 1941