🔎 UNIDENTIFIED Silver-tone ring with red stone, "1864", Menorah, Star of David & Eye of Horus

[Snownine]

The Stone: It features a large, smooth, dark red oval cabochon stone (possibly agate, glass, or garnet).
The Metal: It appears to be silver, though I haven't tested it yet.
The Band Markings: On one side of the outer band, the number "1864" is stamped clearly. On the opposite side of the band, there is some cursive engraving or script that I can't quite decipher (it might be a maker's mark or signature).
The Hidden Symbols: The most fascinating part is underneath the main bezel plate. It is engraved with three distinct symbols next to each other: a Menorah (7-branched candelabrum), a Star of David, and an Eye of Horus.
I took a video showing all angles and managed to get some clear frames of the markings.
Any guesses on the origin or age of this piece, and what's the price of it?

 

[Red-Coat]

Welcome to Tnet.

This is a pure guess, but the symbology of star of David, menorah, and eye of Horus might be termed ‘syncretic’ (the merging of different beliefs, cultures, philosophies, or practices into a new, unified system). The only syncretic belief system I can think of whose advocates have commonly combined Egyptian and Jewish symbols would be Hebrew Christians (later becoming the distinct organized movement of Messianic Jews). They identify as Jewish, together with adherence to traditional Jewish practices, but also hold the Christian belief that Jesus was the divine Messiah (as ‘Yeshua’). The eye of Horus, in a spiritual sense, was taken by them to represent a "bridge" between ancient cultures and faiths with different beliefs.

The year 1864 also potentially held some particular significance for Hebrew Christians. It was the year in which the missionary and pioneer Louis Lederer succeeded in launching a new Hebrew-Christian Brotherhood in New York; it was also the year in which Rabbi Gurland publicly affirmed his faith in Jesus and was baptised. Both were significant events in the history of Jewish evangelism and its spread to other converts.

The fraternal Knights of Pythias was also founded in 1864 in Washington DC. and had a strong connection to the Jewish community because it was non-sectarian, with the only membership requirements of being white, male, and a believer in a Supreme Being. As such, many immigrant Jews joined up and some Lodges were formed specifically for, or largely by Jewish, members. However, the symbology of the ring has no particular connection to the Knights (other than indirectly via Hebrew Christians) and other symbologies used by the Knights are not present.

The construction of the ring looks to be artisanal rather than commercial and, whatever it might symbolise, I have no idea what it might be worth.