japanese 50 sen coin but??? [opgelost]

cant find it here

 Fifty is  五十  /  Ten is  十  

https://www.ebay.co.uk/itm/355754497846 

Japan 1942 World War Two 

10 Sen Coin / Shōwa Era Year 17 / Emperor Hirohito 

N#5438 

In this case, 1940 (Shōwa Era Year 15 - 五十):

hmm ai said it was 50 sen. i have to dubble check what they say

ZacUK

 Fifty is  五十  /  Ten is  十  

https://www.ebay.co.uk/itm/355754497846 

 

 

Japan 1942 World War Two 

10 Sen Coin / Shōwa Era Year 17 / Emperor Hirohito 

 

    

N#5438 

 Here is a 50 Sen, with the two symbols [五十] on the reverse 

N#14253 

whereas yours only has the 十 so is a 10 value. 

 The fifty is written as 5 10 which has to be multiplied 5x10=50 value. 

There is no 五 on the reverse of yours so can not be 50, just the 10 value. 

 Explanation of those numbers 

- https://en.numista.com/numisdoc/calendar-japanese-34.html 

thank you all