Vintage polish Boleslawiec pottery coffee/tea mug

Vintage Polish Pottery Boleslawiec coffee/tea mug measures approximately 3.75” high and is approximately 4.25” wide from handle to side of mug and is about 3” in diameter. This is handmade in Poland and there is a M2 on the bottom of mug. No chips or cracks but does have some crazing on the bottom.