Theme : Zodiac signs 05

In 1957, an international philatelic exposition was held in Israel.
For that occasion, a sheetlet was issued on the theme of zodiac signs.

1957 Israel sheet with tabs

On the side of the sheet, there are 4 tabs, each belonging to one stamp.
A closer look to the centre of the sheet we'll see that the square in the middle is in fact a combination of 4 unperforated triangular stamps.
Unperforated isn't the right word, in fact the stamps are line pierced (percé en lines) which makes it easy to remove them out of the sheetlet.

percé en lignes - line pierced

1957 Israel sheet (detail without tabs)

The four stamps denominated 100, 200, 300 and 400 are very nice designed triangular stamps (see older post).

Part of the sheetlet - cancelled