We looked through the entire Martin & Cooper 'Monmouth-Western Stoneware' book, and neither the vase, nor the label is pictured or dated. The book has catalog pages from 1926, 1935, 1937, 1938, 1939, 1941, & 1946, but those pages do not include the whole catalog, just the 'additions' pages, and the pictures are of poor quality, with details not discernible. We did find one large vase with a double handle in a 1935 catalog page, in a similar shape to yours, but again, the picture is so poor that we could not confirm the id. Wish we could do better, but the book is not a good reference resource, but it is the only one available that we know of.
