Weathered chard

[White Heart]

I found this 2 tenths of an inch thick chard in clay. It has more weathering than any other glass found in the area.
I am curious as to how old the glass may be and how long it would take for such weathering/pitting to take place in a dry to slighly moist environment. The weathering inside is the same as on the outside and edges. It is razor sharp so I figure that it did not tumble in water. Photoed dry and wet.
Do you bottle experts have any ideas?
Thank you
WH

 

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[epackage]

Weathering like that would most like depend on the soil and the minerals found in it, I doubt you could reduce the date down to less than a 100 year period....

Look at what acidic soil did to this Kinch beer bottle, every bottle found at the site had this orange peel effect to it, also pictured are two color variants of the same bottle without the orange peel.

 

[White Heart]

Thanks epackage.
How old are the Kinch bottles with orangepeel? How long in the earth?
WH

 

[epackage]

The Kinch dates to 1900, how long the orange peel one was in the ground is unknown...