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
- RADIAL MARKINGS
- - A border pattern using a series of parallel markings on the rim edge of the coin.
- RAINBOW TONING
- - Toning that has many of the colours of the rainbow - red, orange, yellow, green, blue,
indigo, and violet. Also Iridescent.
- - A comparative term denoting a high degree of scarcity, often categorized into degrees
of rarity as Extremely Rare, Very Rare, etc. There is no universally accepted scale or
nomenclature for rarity. It is therefore important to properly understand the context in
which the term is used. The Absolute Rarity of an item will refer to a statement of the
actual physical number of such items thought to exist. The Relative Rarity will simply
indicate the degree (relatively ranking) of rarity of one item compared to others without
stating the actual numbers thought to exist.
- - Royal Canadian Mint.
- RECUT DATE
- - A die that has had its date changed (recut) for use in later years in an effort to get
greater use of the dies. See Overdate.
- RED AND BROWN
- - A copper coin that has approximately 40-60% of its original lustre remaining is
described as Red and Brown, that is, about half way between Mint Red (100%) and Brown (0%)
- REDUCING MACHINE
- - Used for making master dies or punches in actual size from enlarged original models.
Example; Janvier lathe, three dimensional pantograph.
- REEDED EDGE
- - The result of a minting process which creates vertical serrations (grooved lines) on
the edge of a coin. The process is performed by a collar die simultaneously with the
striking of the faces of the coin. See Serrated Coins.
- - A fine graining on the edge of most coins struck in gold, silver, and nickel. It was
originally a safeguard against Clipping. It is incorrect to call it milling.
- REFLECTIVE SURFACES
- - See Mirror Proof and Mirror Depth.
- RECAL ISSUE
- - See Semi Regal Issue.
- - A numismatic item issued again after an extended lapse of time.
- RELATIVE RARITY
- - See Rare.
- - Any part of a coin's design that is raised above the coin's surface is said to be in
relief. The opposite of relief is incuse.
- - The tolerance allowed in the purity and weight of a coin.
- - Any coin, token, or medal that has been repaired by plugging holes, filing of rim
gouges, etc. and is usually made available for sale as if the coin had never had any
- - A copy of the original, a facsimile.
- - See Replica.
- - A protective bid in an auction placed by the consignor of a lot which must be exceeded
if that lot is to be awarded to another bidder.
- - A numismatic item produced from original dies at a later date. In the case of a coin,
usually not with a view to meeting a monetary need.
- -The price at which a collector can usually buy a coin. See Market Value.
- - The side opposite to that on which the head or principal figure is impressed. The side
opposite from the obverse. Also known as "tails."
- REVOLUTIONARY COIN
- - A coin issued by an insurgent government.
- RIBS, RIBBING
- - The fine vein lines on the surface of a leaf.
- - The shaking process used to remove foreign particles from freshly cut coin blanks.
- - The raised outer margin surrounding the border and protecting the surfaces of the coin
from undue wear.
- RIM DIG, RIM GOUGE
- - Refers to a deeper, usually more distracting form of surface abrasion, produced when
the rim or edge of one coin made contact with the surface of another, such as would happen
when coins were poured on top of each other into a mint bag.
- RIM NICK
- - Refers to any marks or cuts into the rim or edge of a coin, usually through contact
with another coin.
- ROLLING MILL
- - converts large, bulky ingots into a thin planchet strip from which individual
planchets are punched.
- - A standard quantity of identical coins all of the same type and date.
- ROYAL CANADIAN MINT
- - Located in Ottawa with branch mints in Hull and Winnipeg. Has been named the Royal
Canadian Mint since 1931 when it came under the full control of the Canadian Government.
Prior to this and beginning in 1908 coins were still minted in Canada but the Mint was
actually just the Ottawa Branch of the Royal Mint in London. Prior to 1908 all Canadian
coins were minted at either the Royal Mint or the Birmingham (Heaton) Mint.
- ROYAL MINT
- - Located in London, England.
- ROTATED DIE
- - Dies are positioned and locked on a coining press by means of a key. When these keys
come loose, rotation can occur resulting in the next coin being struck with the obverse
and reverse dies rotated. Coins struck from rotated dies are errors.
- - Reference to the very slightest of wear on a coin at its highest points of relief or
where the lustre has been destroyed. Caused by light friction as in loose coin storage or
even light circulation. Generally claimed only if can be detected visibly (ie not using
magnification) and where the lustre is clearly broken. On toned coins that are generally
dark, a very slight lighter tone at the high point does not necessarily mean the lustre
has been broken; it may be a thinning of the transparent film that gives the perception of
colour but not to the point where the lustre has been touched. See Thin Film Light
- - In general terms, any film or coating on a metal due to oxidation. Most typically
associated with the red and orange looking oxides of iron.
- RUSTED DIES
- - Dies which have become pitted through corrosion. The pits are transformed into tiny
dots of metal on the coin, some of which are visible and others simply giving the coin a
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