A B C D E F G H I J K L M N O P Q R S T U V W X Y Z





TAILS
- Slang for Reverse.
TARNISH
- See toning.
THE NUMISMATIST
- Monthly journal of the ANA.
THIN FILM LIGHT INTERFERENCE
- An optical phenomenon that is responsible for out perception of the colours from the thin transparent oxide film that surrounds a coin.
THIN MARKET
- Refers to the fact than most semi-key and key date uncirculated Canadian coins are scarce. The demand for a quantity of quality uncirculated examples of certain dates can sometimes effect significant upward changes in the price of a coin. The market is particularly "thin" for originally toned pre 1920 decimals grading MS-65 and up.
TOKEN
- A much-misused word that has more than one meaning. It originally meant a coin worth less intrinsically than its face value. Thus, certain early British government correspondence refers to proposed decimal coins for Canada as "an issue of tokens" This meaning survives the phrase "token money" which describes such things as out present nickel 25 cent piece. A token is also a piece of metal resembling a coin, issued without government authority usually when regular coinage is scarce. It is backed by the issuer's promise or pledge to redeem in lawful money on demand, hence the old English term "pledge" for such pieces. Tokens in Canada have been issued redeemable in money, in goods, or in services.
TOKEN COIN
- A coin originally issued with an intrinsic value less than its face.
TOMBAC
- A mixture of 88% copper and 12% tin as used in the 1942 and 1943 copper based Canada 5 cent pieces. A form of brass. Subject to very quick tarnishing once in circulation. See Blackout Nickels.
TONING
- Refers to the very thin film, colouring or mellowed appearance upon the surface of a coin. Caused by the chemical combination of the metal in the coin with another element such as sulphur, over a long period of time, to produce a film and the perception of this film by the eye or other optical instrument. Often coins that have been "dipped" and have retoned have a flat or dull look versus the "pristine" look of an originally toned coin. See also Artificial Toning and Original Toning.
TO RAISE
- To bring up or to cause a design to be cameoed on the surface of a die. A process requiring more than one strike.
TRADE
- Acquiring a coin or coins for one's stock or collection by barter with another with a group of coin(s) of equal value.
TRADE DOLLAR
- Silver dollar issued especially for trade with a foreign country. In the United States, trade dollars were first issued in 1873 to stimulate trade with the Orient. Other countries have also issued trade dollars. In recent years, the idea of the trade dollar has been used by various cities or communities for the same purpose over a limited time. See Trade Tokens.
TRADE TOKENS
- Tokens redeemable in money, as a rule by the issuer and valid only in the community where issued. The best examples of these were issued in Western Canada.
TRANSPORTATION TOKENS
- Tokens used to pay fares of tolls on ferries, trains, buses, bridges, or tunnels. The Bout de I'lsle tokens are Canada's earliest.
TRENDS
- Reference to regularly published and updated market price (retail) levels for all Canadian coins in all grades except the very highest, rarely seen examples.
TRIAL PIECE
- A piece, usually uniface and in a soft metal, struck for the purpose of having a sample of the design. Such pieces can be struck from a matrix or a die. See Experimental Pieces.
TRICHLOROTRIFLUOROETHANE
- An organic solvent that is similar to acetone and is used for removing foreign contaminants that may be on the surfaces of a coin and cause corrosion of the metal.
TRUNCATION
- Lower edge of neck or bust of a portrait on a coin.
TYPE
- Main design for a series, regardless of modification at any time.
TYPE COIN
- A coin used as an example of the basic design, irrespective of minor design details, such as mint marks, dates or other minor elements.
TYPE COLLECTING
- Collecting coins on the basis of the Type or Design on the coin.
TYPE SET
- Collection comprising one coin of each desired series.
TYPICAL LUSTRE
- Reference to the usually seen lustre for any given series (not date) and which may be distinctly different than the quality of the lustre of another monarch series but still of the same denomination. The difference may be due to metal composition, striking pressure, quality of the dies, etc. Often one or two dates in a series may have different lustre properties than is typical for the series as a whole.
TYPICAL STRIKE
- The characteristic (typical) strike detail usually seen of a coin for each date or series and which may not be a full strike as designed.




A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


 

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