Page 174, McDougald's Guide, (10), Smooth base, embossed at the base of the pinhole (not threads as the guide states) and look smore greenish aqua than aqua to me. Has a small flake ta the outside of the skirt at the base. Has a nice amber streak paralleling the bottom of the base. Has the grooved pinhole. Low book is $1,750. With the flake I will take $1,400 and pay postage. Still looking for good 143s and Canadian Bostons