This old, weighted tee has two arms made from india rubber that provide two different tee heights. The arms can be swiveled around as needed thanks to a smooth, metal fastener that attaches them together. The top arm of the tee is stamped "Avon Combination Tee Reg No 690337." The British registered design number dates to 1922.
There is a hole in the bottom of the taller tee, which is easily seen when viewing the underside of the tee, but the rest of the tee is in fine shape.