Sammy, a Contemporary Farmcollie
Here is a card entitled Summer Days that has a picture of a collie like Sammy, and this 1915 calendartop has three more of this type.
More Information on farmcollies can be found at the site Collies Back to the Future and at the site on Old Time Farm Shepherds below.
Chelsy another farmcollie from the same source is found here.
OLD TIME FARM SHEPHERDS