You'll have to find the correct one visually, as there are many DP 9's. Since the last 9 was handpunched into the blank "185" die, there are many overstrikes. Make sure that it's not a 9/8. It would help with a photo so we can tell you what it is.
https://www.coinsandcanada.com/coin...nt-1858-1859You can also look in the 2011 Charlton 65th edition for some of them.