The Mono Classic Teapot was designed in 1983 by Tassilo von Grolman.  Featuring heat resistant glass combined with stainless steel, the teapot with or without warmer.

Replacement parts are also available.

A Bauhaus inspired design (think 'Less is More') the Mono Teapot series featured large sieves designed to increase hot water access to tea leaves, resulting in a smaller brew time. 

3" x 7" dia. goes with
10/450: Classic Teapot with Tray
     9.5" x 7.5" x 6.5"; 50 ounce capacity.

 More Mono tea products are available here.
Other products from Mono GmBH are available here.