WTB astra Cadix rear sight leaf

[DancesWithMoonclips]

I know it's a longshot, but I was wondering if anyone has a rear sight leaf for an Astra Cadix 22 revolver. I inherited the revolver and it's complete and in good shape except for this rather key part. I'm happy to pay what you think it's worth. PM me if you happen to have one in your parts box.

Thanks, Dean