JG 27 battle over Pantelleria question

[ValorStudios]

Hello All,

I'm researching the fighting over the Pantelleria area on June 10, 1943, and am trying to figure out exactly how many II/JG 27 Bf-109s were shot down.

I have Prien's unit history of II/JG 27 that says 12.

I have an Osprey unit history of JG 27 that says 10.

I've read a post on here that says 11.

Does anyone by chance know which is correct?

Any help or guidance you could provide would be appreciated.

Thanks!
Bryan