Coin identification and valuations

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Hello,

1. Myanmar 25 Pyas, 1966:
https://en.numista.com/catalogue/pieces1647.html

2. Same as No.1

3. Myanmar 10 Pyas, 1966:
https://en.numista.com/catalogue/pieces1648.html

4. Same as No.4

5. Japan 5 Yen, Heisei 3 (1991):
https://en.numista.com/catalogue/pieces2676.html

6. Japan 10 Yen, Heisei 1 (1989):
https://en.numista.com/catalogue/pieces3047.html

All are worth only face value I'm afraid (the Myanmar coins might not be legal tender anymore, in which case less than 1 euro each).