Hornbill Stamps - North Borneo

I flipped through my album and noted some hornbill stamps from North Borneo. I feel like displaying them in my blog. I wrote something on the hornbill stamps of Malaysia some time ago, and it is just good to add on these hornbill stamps in this entry to supplement the previous one because North Borneo is now known as Sabah, is part of Malaysia. All the three hornbill stamps shown below portray rhinoceros hornbill.