A little gem of a folk painting I think, better in person--the combination of blue and green and white really do it for me, and I love that the gate is neat dead center, a threshold just waiting to be crossed. And the painterly bands of white to either side of it, though I guess representing a stone wall, seem as if suggesting a flock of sheep lined up waiting to be released! Initialed at lower right and framed as found, in an old gold painted frame that I think suits it just right. as 

Framed: 9" x 7". Sight: 5 3/8 x 3 7/16. The back is papered over but it appears to me to be painted (in oil) on a thin wooden panel. Small loss to the edging on the frame at upper corners, otherwise great condition and a bit brighter in person. Early 20th c. I would think.