Agro-Based Product State Definitives: Kedah 30c

I obtained the below block with plate number 11A for Kedah 30c agro-based product definitive some ago. The perforation of the stamp is P14.75x14.5. Kedah 30c with this type of perforation is not common. The SG catalogue in 2005 did not list this variety, but listed P14x14.5 and P14x13.75 types. Nevertheless, what make it more interesting is the below block Kedah 30c has inverted watermark. I don't have the latest SG catalogue, therefore, I don't know the catalogue price for this vareity. I love to be informed its catalogue price. Could any of you help?