These coins are minted in aluminum bronze and carry decent value if in very good condition. Here is a rough idea of catalog value.
500 REIS DATED 1935
worn: $2 US dollars approximate catalog value
average circulated: $8
well preserved: $20
fully uncirculated: $40
500 REIS DATED 1936, 1937, OR 1938
worn: less than $1 US dollars approximate catalog value
average circulated: $1
well preserved: $4
fully uncirculated: $8
You see that 1935 is the *good date* in the series. Be sure to apply the concepts on our Terminology page to convert these inflated catalog values to actual buy and sell values.