That is bumpy textured glass meant to obscure the view through it much like glass for bathromm windows. The bumps, or pits, have a definite pattern.

Not very unique. It's machine-made industrial glass used to keep people from looking out or in while letting a lot of light through.

Those panes, or patterned colored panes were often used as placeholders for planned stained glass windows. The congregation would periodically hold fundraisers and buy a pane of leaded glass, or if they got lucky someone would donate a window.

And the smaller churches usually didn't get many stained glass windows.

Window glass was cut by hand, There are and were lots of patterns of obscure glass.
It's not hand blown, it's rolled.
As to value, ask at a local architechtural salvage yard.

Thanks for your responses. I was going to experiment with coloring the glass, but I wanted to make sure beforehand that they weren't of too much value that coloring them would lessen their value. I guess I can go ahead and make them pretty now :)

Do you still have this glass?? I own an old home and one of the old bathroom windows broke and I need this same pattern to replace. Very interested

I would be interested in purchasing some also. If you still have them. Thanks. (After Nikki, of course!)

It's just another pattern of obscure glass.....don't know that it has a name.

Pete Gregory, This looks like HOLLY GLASS.