What a nice looking coin. I'd add it to my collection ...
These silver coins were minted by Poland in 1924 and 1925:
1 ZLOTY: 0.121 troy ounces silver
2 ZLOTE: 0.241 ounces silver
Since they contain precious metal then can never be worth less than their silver content. For silver selling at, say, $15 US dollars per troy ounce, a 1 zloty's base value (BV) is 0.121 x 15 = $1.80 USD.
But these are generally rare coins and they are worth quite a bit more than silver value. Here is a run-down:
worn: $15 US dollars approximate catalog value
average circulated: $30
well preserved: $80
fully uncirculated: $200
worn: $20 US dollars approximate catalog value
average circulated: $45
well preserved: $120
fully uncirculated: $300
2 zlote dated 1924 with and H mint mark are more rare, triple these values
Be sure to read our Terminology page to properly interpret these catalog values.