Print substrate colour difference: common term for two the same postage stamps with no print substrate colour agreement |
Paper colour difference: common term for two the same postage stamps with no paper colour agreement |
Paper colour shade difference: common term for two the same postage stamps with no paper colour shade agreement |
Paper quality difference: common term for two the same postage stamps with no paper quality agreement |
Print substrate kind difference: common term for two the same postage stamps with no print substrate kind agreement |
Paper kind difference: common term for two the same postage stamps with no paper kind agreement |