I am currently collecting the stamps of British Mandate Palestine, and have found there are many catalog systems in use. On
ebay the most popular seems to be Stanley Gibbons, but a local dealer here in Israel told me that Michel is now the most used. I know there is also a catalog from Bale and Yvert too but have not seen them.
I currently own the Scott catalog - but find the Palestine section very frustrating - they assign many minor numbers to things that should be major in my opinion.
Looking for any opinions on the best system to use to research and organize my collection, thanks!