Quarter dollar

Hi all - I’m new there - have lots old coin from good few countries - have lots questions but will start with one US coin - any idea that coin is worth to keep ?

We need the other side of the coin to properly identify (the date is on there).

It looks like an older, silver one, so yes, keep.

the Numista catalog page has a good view of the potential values.

N#54

With a few exceptions, circulated ones like yours, about VF,  are worth their weight in silver, currently around US$4.00

1957-D 

Not a rare date, but an honest hunk of 900 silver. 

These silver Washington quarters (and also the Roosevelt dimes and Franklin half dollars) were horded in massive amounts at the end of silver currency in the mid 1960s.  You can now buy them by the  bag all day long for around $5 each.