U-1665, it looks like two letters are incised on the side of the dome with one of them looking like a "K." Low-fire red glaze over a high-fire white glaze. From Poland. 2.5" x 3.75" tall. 1/4" x 1/8" flake on the lower shoulder. Red glazed rubbed off in places. $400 postpaid. PayPal friends and family to RDMershon@aol.com or a check/money order to Rick Soller, 4086 Blackstone Ave., Gurnee, IL 60031.

U-1663 red glazed insulator from Poland