What is the Silver weight at purity of the Tyrian Shekel = ~ 92%

Any information is helpful. Was the stater coinage debased circa 63 BCE?

PHOENICIA, TYRE. SILVER TETRADRACHM c.125 BC 14.33 grams ~???% Ag = ?? grams pure Ag
PHOENICIA, TYRE. Silver Shekel - Tetradrachm 95 - 94 BC 13.9 grams ~???% Ag = ?? grams pure Ag
Philip I Philadelphos AR Tetradrachm 93-83 BC Seleucid Empire: 14.5 gm, ~???% Ag = ?? grams pure Ag
Ptolemy XII Auletes AR Tetradrachm, 72 BC: 13.8 gm, ~30% Ag = 4.14 grams pure Ag

 

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Nearly 100 views, and not a reply? No one knows?

 

The Middle East Under Rome , Maurice Sartre (2005) p.263
“...starting in the Late Hellenistic Period, at least, coins from Tyre far outnumber any others in most sites in Galilee. Which seesm to indicate the direction of the trade axes. In addition, inscriptions from Gerasa describe payment in Tyrian silver. But does this really represent a heavy flow of trade, or does it simply result from the fact that until 65/66 Tyre was the only mint in the region producing silver coins, thus furnishing most of the currency necessary for commerce? This coinage with a high silver content (96 percent) and a heavy, fixed weight was highly valued.”

A few examples: http://www.forumancientcoins.com/numiswiki/view.asp?key=tyrian%20shekels

Tetradrachm 126/125 BCE (Demetrius II Nikator) 13.811 grams ~???% Ag = ?? grams pure Ag
View attachment 218045

PHOENICIA, TYRE. Tetradrachm 111/110 BCE 14.211 grams ~???% Ag = ?? grams pure Ag
View attachment 218046

PHOENICIA, TYRE. Tetradrachm 107/106 BCE 14.184 grams ~???% Ag = ?? grams pure Ag
PHOENICIA, TYRE. Tetradrachm 94/94 BCE 14.38 grams ~???% Ag = ?? grams pure Ag
PHOENICIA, TYRE. Half-Shekel 76/72BCE 7.0 grams ~???% Ag = ?? grams pure Ag

 

At full-weight, the Tetradrachm was estimated at 14.52 grams, and so, at 94% purity 13.65 grams of Ag.

The Word of Women's Worlds: Four Parables, 1988:
"Drachmas, two-drachma pieces, and four-drachma pieces produced in the Syro-Phoenician city of Tyre during the second and first centuries B.C.E were still in circulation in Palestine in the first century C.E. The Tyrian drachma, weighing about 3.63 grams, was considered the approximate equivalent of the Attic drachma and the Roman denarius.(5) {...} Josephus assumes that his first-century C.E. readers are familiar with Attic drachmas and attests to the circulation of Tyrian coinage in Galilee. He reckons a shekel at four Attic drachmas and a Tyrian coin in use in Galilee, presumably the tetradrachmon, at the same value (Ant. 3.8, 2§195; JW 2.21, 2§592)."

 

I don't agree with your theories. I don't particularly want to supply you with data.

But I will at least continue to follow.

Best of luck.