Persian ? Can anyone please help identify what these are?

I've looked on the internet and can find similar bowls but with different pictures. I found a website that explained how to find and translate the dates on the coin that im guessing it's engraved in this bowl? However the only thing I was able to translate on my own was the denomination. Lol which is 5 dinner right? I I found these in our attic of the home we just bought. I'm guessing they are pewter. I'd love to learn anything I can about them.