This is an early Pyrex clear glass ovenware teapot, engraved in the floral Spray pattern. It is not flameware, it cannot take direct heat from the stovetop, but it can handle high temperatures and hot water can be poured directly into it. Pyrex made ovenware tea pots (also called beverage servers) in the 1920s-30s. The metal lid and handle were aftermarket, added by a different company. The teapot is marked on the base Pyrex 44-84. It is a 4 cups size. The pot is in excellent condition with no chips or cracks. It is 4 1/2" tall and 5" wide. This teapot is a rare piece, I could not find another anywhere online. It can be see in the book Pyrex: the Unauthorized Collector's Guide, 3rd Ed., by Barbara Mauzy on page 57.