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Measuring 34 mm in diameter, the coins weigh 33.436 grams each (one ouncecontains 31.1 grams), are alloys of 90% gold and 10% copper, and each contains .9675 ounce of gold. Twenty-dollar liberty gold coins have reeded (milled) edges, but the St. Gaudens have lettered edges

A manufactured collectible (often referred to as a contemporary collectable) is an item made specifically for people to collect. The terms special edition, limited edition and variants such as deluxe edition, collector's edition and others, fall under the category of manufactured collectable.

The current value of a 1 oz gold american eagle coin (which contains 31.104 grams of pure gold) is $1356 , while the value of one ounce of pure gold is currently around$1295.

Common categories of collectibles include antiques, toys, coins, comic books and stamps.

The gold dollar or gold one-dollar piece is a gold coin that was struck as a regular issue by the united states bureau of the mint from 1849 to 1889. The coin had three types over its lifetime, all designed by mint chief engraver James B. Longacre

A collectible (collectable or collector's item) is any object regarded as being of value or interest to a collector not necessarily monetarily valuable or antique.