Pyrex, by the Corning Glass Company, was introduced in its clear form in 1915. The very popular pieces in colors like Terry's pink entered the market in 1947, making it now officially vintage. Many of the pink pieces were introduced in the 1950's and were very popular. Fortunately today there are many websites about Pyrex and collector clubs to assist those who love it. It is also still functional...a real attraction for families wanting to re-create the feel of days gone by.