No

Year

SG

Scott

Reason

1

1971

68

68

Open book between scales

2

1971

69

69

Open book between scales

3

1971

70

70

Open book between scales

4

1971

71

71

Open book between scales

5

1972

125

125

Book year symbol

6

1972

126

126

Book year symbol

7

1972

132

131

Books in bottom right corner

7a

1972

MS133

131a

Books in bottom right corner of stamp in top left selvedge

8

1979

225

223

Writing in book

9

1979

230

228

Open book

10

1985

343

350

Writing on books

11

1987

377

384

Holding book in air

12

1987

378

385

Holding book in air

13

1987

379

386

Lenin holding notebook