silver with golden toning

Heres another Probus with golden silvering

 

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Moesia Inferior, Tomis. Commodus AE27. Bust of Sarapis
Obv: ΑΥΤO Κ Λ ΑΙΛ ΑΥΡ ΚΟΜΟΔΟΣ. laureate head of Commodus, r.
Rev: ΜΗΤΡΟΠ ΠΟΝΤΟΥ ΤΟΜΕΩΣ Δ . head of Sarapis wearing kalathos, r.
27 mm.,10.0 g.
die-axis: 7
AMNG 2694 var.

 

Thanks all

 

Maybe a chemist on this site could chime in here, but I'm pretty sure that elemental (metallic) gold cannot possibly react with silver, or any other metal, to give that other metal a gold tone.

Gold is a VERY inert metal, and only ionic gold atoms will combine with other elements. It's very difficult to create ionic gold atoms -- you would need very strong chemicals or high amounts of energy -- so simply placing a silver coin in contact or close to a gold coin would not create toning that appears golden.

 

I'm chemist! True 'dat!!!

On the other hand I have a silver coin mixed with gold. Fancy people call it electrum - I call it dope-inium.

Kidarite Huns
India, Kannauj
Yashosvarman of Kannauj (AD 728-745)
EL Dinar 22 mm x 7.56 grams
Obverse: Formalized Kushan-style king sacrificing left; below arm, Kidara; in left field, Ka.
Reverse: Semi-realistic goddess Ardoksho (Tyche) enthroned facing, holding garland and cornucopiae; in right field, Sri Yasova; in left field, Rma.
Ref: Smith (1906), Indian Museum Calcutta, Vol. I, Part III, p. 268, 1ff and pl. XXVII, 6; MACW 3649 ("Kidarites", 5th C.). Good Very Fine. Rare.

 

Thanks