The marks under the peacocks tail.
From left to right; French weevil in rectangle, import silver hallmark minimum 800/000, ۸۴= 84 in Persian(Farsi) for silver 875/000 , Iranian maker's mark, followed by the town mark of Ashuri (Āshūrī in Hormozgān). Upper hallmark; the nationally recognized lion with scimitar, in single frame outline for silver 875/000, domestic silver hallmark used 1967-circa 1979.
In the 18th to early 20th centuries the silversmiths working in the geographic regions of northern Persia were strongly influenced by the neighbouring Imperial Russian Empire. At the time, Russia used the Zolotnik System in which the 84 purity designation equated to a fineness of 875 silver. The imitative use of the 84 designation, seen in Persian, Arabic and sometimes western numeral, was adapted in Persia and Arab territories, also as an 875 silver fineness, and was used especially for goods destined for export and the tourist trade.
Peter.
Source; World Hallmarks-Vol.II, Middle East, Iran.