There are very rare variants in faience, including the left double one, or with suspension loops also of the Late Period1
Green glaze
L 2.7, H 1.4, T 0.5
Ptolemaic Period
Museo Egizio #1362
Dark green glaze with suspension loop and
decorated vertical bar
H 2.1, L 2.1, T 0.6
© 2022 Musée du Louvre/Antiquités
égyptiennes #E 1686
Green glaze with
suspension loop
H 3.6, W 3.7, T 0.6
© 2022 Musée du Louvre/
Antiquités égyptiennes
#E 1846
References
1None, Unpublished amulets