1931 1933 UNC
1934 Slightly Tarnished / AU?
Hello and welcome to Numista!
You can get a good idea looking at the coin page and the NGC listing, somewhere between 2 and 8 USD.
N#4723
https://www.ngccoin.com/price-guide/world/hong-kong-prc-cent-km-17-1931-1934-cuid-1202013-duid-1409719
Maybe I'm wrong but looking at the picture none of them look to be UNC or AU so probably closer to the $2 value.
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