From R to L in the photos: ink/sapphire HEMINGRAY-19, dark cobalt blue HEMINGRAY-19, cobalt HEMINGRAY/PATENT MAY 2 1893, milk streaked HEMINGRAY/MADE IN U.S.A., milk filled cobalt no name No 19, cobalt HEMINGRAY No 19, peacock H.G.CO./PATENT MAY 2 1893, med-dark electric blue H.G.CO./PATENT MAY 2 1893, milk streak filled electric blue HEMINGRAY/PATENTED, and last a milk streak filled light electric blue H.G.CO./PATENT MAY 2 1893.