This collection is gorgeous and I'm afraid that I really, really, really need them! (The lower left teacup in the 1900-1940 collection below is the "Polka Rose".)
The first set is representative of the years 1900-1940:
The second set covers the years 1950-1990:
The teacups are bone china, with a commemorative backstamp, and arrive packaged in a presentation-style hat box. Each set of five cups and saucers costs $130.00 (plus $12.95 s&h) .... and if you register on their website, you will immediately be treated to a coupon worth 15% off your first order.
Now please excuse me while I go make some room in my china cabinet .....