Watch List notes:

Oman, 100 Baisa - 1/2 Rial, 1973, Pick# 7a, 8a, 9a, Oman Currency Board, SL# B/6 900264, B/2 508704, B/3 590636, UNC

Brown on blue-green and multicolor underprint. Arms at right. Watermark: Arms. (100 Baiza)
Blue and brown on multicolor underprint. Arms at right. Back: Jalali Fortress. Watermark: Arms. (1/4 Rial)
Green and purple multicolor underprint. Arms at right. Back: Sumail Fortress. Watermark: Arms.(1/2 Rial)