Eager Doggy in Green Chair, Antique British Watercolor Postcard

Good dog! This is a hand-painted watercolor postcard with printed back, found in MA but British, monogrammed AH on the front and signed what looks like A Hall on similar on reverse--with a graphite sketch there too of a very prim and sour looking man! Better in hand, with a bit more blue to the ground behind the dog (which appears more gray here.)

5 1/2" x 3 3/8", very good condition, early 20th century, bright and crisp feeling.