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Author Topic: Does this appear to be BD...?  (Read 573 times)

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Offline Julia B

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Does this appear to be BD...?
« on: December 08, 2021, 03:33:07 pm »
I saw this on an auction that ended a while ago. was wondering because I’ve never really seen a patina like this and it looks kind of strange. I would like people’s opinion on this.

Offline SC

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    • A Handbook of Late Roman Bronze Coin Types 324-395.
Re: Does this appear to be BD...?
« Reply #1 on: December 08, 2021, 06:02:53 pm »
The small parts that appear in the photo as a dark blue-green do look like they could be BD.  Some occur in an old dark red raised blister which is often a sign of old BD or pre-BD type corrosion.

The lighter beige-green spots do not appear to be BD.

These theories should be tested.  Is the darker green powdery when poked with a sharpened toothpick?  If so that confirms the BD.

SC
SC
(Shawn Caza, Ottawa)

 

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