These stamps were printed in 1945-47, and show very poor color control. Most of the other papers show a high degree of color control and for these latter papers, the color is a key component of the identification process. I begin with the 40c value:
![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tfxY-2QB2MACbNv_t_7ZMnFWTOfKHsiXwBDRK_NCiB7bJUWTfblco7-UPk13hD6PT_11U8Nk0cT0kPIYBr230NOIxNHqt7fCepa3Tlc_QgJ3TR5_UZr14QQQtj3sdHpfXdR0NdiV7ZRz06NjbQxDY=s0-d)
![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_s2rpMrj-ewt8ZhKFDtdehzwrEPQm0svxHAs8PtsY1sERl0zMV7tZBdEtH6xJCEeUBtZ74ar3QUIkm3YQ8FEwLYn6BSapWFF4mRIt7ZiEiy-438fP7gy2u65PMNUHoj-yeuYYAh1fGVOczEPvYlEQ=s0-d)
Incidentally, I find that the 30cNGR is a very common stamp, the 20c Cattle is somewhat common, and all other large format values for this paper are at various degrees of rarity.