Three coins stuck together!

[SpyHunter]

Found these three coins stuck together today. The one on top may be silver (but the blue patina scares me). It also could date as early as the 14th or 15th Century.

Couple questions:

How could they have gotten stuck together?

Any recommendations on getting them apart to possibly ID the other coins?

Any recommendations on an ID of this coin.......i know it's a long shot. Haha but what I can read is: "8 ERNEST DEIGRA". This is not all the letters but all I can read at the moment.

Hope y'all enjoy looking and happy hunting.

Its storming here now so IDing this coin is all I can do now!!!

Thanks for looking.

 

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[Bob-E-Pin]

Soak them in hot water with a tiny bit of dish soap they should come apart

 

[Mackaydon]

'Del Gra' is short for Del Gratia (By the Grace of God).
Don.....

 

[Mackaydon]

My guess is:Earnest Augustus, the reigning Duke of Brunswick from 2 November 1913 to 8 November 1918.
Don...

 

[Professor of Engineering]

Nice stack of coins, congrats!

 

[Mackaydon]

To me, looks like green patina: copper.
Don.......

 

[CoinFetcher]

Top is silver, bottom are coppers.

The green on the obvious silver coin is from the coppers below.

 

[SpyHunter]

Thanks for all the quick answers. I believe they are a bit older than 1913. They are all hammered. In my opinion. I did get them apart with the soap and water.

I have seen some of these coins before but still can't figure it out.

See more pictures below. They still need some TLC.

 

[Westfront]

These are all silver. With quite a lot copper in. By first look i'd say 16th-17th C. milled silver. If i were you i had them left alone. Stacked together they had been a nice conversation piece with history behind because they were most likely lost in a bag. No cookies for you today.

 

[Inspector]

Nice saves, congratulations