I have never seen this before in a stained glass window. It looks to me to be the Resurrected Christ with his arms crossed. Not sure why it shows one arm robed and the other not. Anyone who knows more please feel free to leave a comment. The window is not in the main part of the church and is not in the best of condition, but its uniqueness caught my eye.
Received the following comment which explains the window..Thanks to whoever sent it.
This is a Franciscan window. It is an adaptation of a common image identified with the O.F.M. friars. The sleeved arm is that of St. Francis of Assisi (he received the stigmata late in life). The bare arm is that of Christ. The arms are superimposed over the Glorious Cross. You will see similar symbols by Googling "Franciscan symbol (or logo)"
St. John Catholic Church - Fryburg Ohio