J.B. Higbee Glass Company produced the Paneled Thistle pattern in 1910. Some pieces have been reproduced by other companies but I do not know if this is an original or a reproduction. From my experience handling antique glass I believe it to be an old piece however.
This square bowl measures 6" square, 7" diagonally from corner to corner, and 2 1/2" in height. It does not appear to have a mark as some Paneled thistle items have.
In excellent condition it has no chips, nicks or cracks at all. There is some light base wear from age.