Hi Rod,
your revenues could identified as follows (Hasegawa 2019 catalogue) -
1) green stamp: General revenue, 10Sen green, Taisho Granite paper, W-4 (1916) #228
2) blue stamp: General revenue, 50 Sen blue, Taisho white paper, W-4 (1937) #260
3) imperforate orange stamp, 2x2 block:provisional Imperforate, 20 Sen Orange, could be
- lithograph, W-4 (1945) #272, or
- lithograph, white paper, W-4 (1945) #272a, or
- typograph, white paper, W-5 (1947) #285
4) imperforate brown stamp;Provisional Imperforate, 30 Sen brown, on white paper, typograph, W-5 (1947) #286.
Please see this for watermarks.

Always amazed with your vast collection of revenue stamps !!!
- Hironobu