D.S. Nº 20 on the right side of the frame.
Printed in booklets of 10 stamps (2乘以5).
Imperforate at top.
Print run refers to all issued booklet stamps of same design.
Same SFCh and YT numbers for both top or bottom imperf. 邮票.
Variety: perforate on two sides (SFCh 1330b)
D.S. Nº 20 on the right side of the frame.
Printedt in booklets of 10 stamps (2乘以5).
下部没有齿孔.
Print run refers to all issued booklet stamps of same design.