Hello and welcome to the forum.
Looks like you have some late 19th and early 20th century medicine and pharmacy bottles. These are quite collectible - it is hard to tell from your photos as to exactly what you have.
Value depends on condition of label, visual appearance of label (are there any graphics along with the text) and contents. Some collectors go crazy over illegal narcotic ingredients like heroin and morphine.
Would be interesting to know what your grandfather's coding system means. I will take a guess and say the 74 might mean 1974. Who knows about other #s
Chris