Vanchester - if you have a lot of Japanese revenues, I recommend the Hasegawa catalogue of Japanese revenue stamps. I have this (7th edition, 2019?) and I have the 2004 edition of Shimomura's revenue catalogue, and I know many people prefer Shimomura (probably because it's been the standard for decades) but I really like Hasegawa's work. They're both in Japanese, but there is a little bit in English. I can speak/read Japanese but still prefer English - especially with philatelic terms - but I've found that Hasegawa's book is still a better and more recent work.
There are sellers in Japan offering it on
ebay for about $75 including shipping. Well worth it if you want to pursue this rich, fascinating field of Japanese philately.