Instruct: Classify a given Amazon review as either positive or negative.
Query: Date just about anything Made in the 20th Century

Starts out with basics, such as patent numbers/dates, dates U.S. coins were introduced, seal of approval dates, and much more. Moves on to US Mail (dates zones, then ZIP codes were introduced). When telephone styles and area code usage began. On to inventions of all sorts (e.g. such diversified things as the ballpoint pens and escalators). Dates the initial production of materials, for example aluminum or stainless steel; the china and glass groups include brands and dated marks. A "made in" section refers to the country of manufacture, both American and foreign items. A cartoon character section dates numerous trademarks. This is followed by dated brand name logos. And it goes on and on with useful dating information. A must for all collectors and dealers in collectibles.