Dmitri Mendeleev (1834-1907), Founder of Period Table
4*100 2019
Kyrgyzstan
Issued by Kyrgyz Express Post.
| Country: | Kyrgyzstan |
| Type: | Postal blocks |
| Series: | International Year of Periodic Table of Chemical Elements |
| Nominal: | 4*100 |
| Year: | 2019 |
| Size: | 159 x 108 mm |
| Perforation: | comb 14 x 14¾ |
| Mintage: | 1,500 |