Retoned

retoned A term used to describe a coin that has been dipped or cleaned and then has reacquired color, whether naturally or artificially.

Retoned
A coin which has been toned through any artificial means.
Revenue Stamps
Stamps issued as proof of payment of certain taxes but not valid for postage.

retoned
A coin that has been dipped or cleaned and then has reacquired its tone.
reverse ...

retoned: a coin that was stripped of color, then artificially toned to make it look original.
reverse: the back of a coin, usually the side without a date or a head. When you flip a coin and call "Tails," this is the side you want.

Retoned -
Coin dealer slang for a coin which has been artificially toned, usually through some sort of chemical means.
Reverse - ...

Perhaps the coin could be cleaned completely and retoned replacing the mixed surface with an even tone. A poor attempt would be quite likely to ruin the coin leaving a porous and ugly surface.

Perhaps lightly cleaned long ago, now retoned. Obverse with ANS devices and dates, reverse with JOSEPH E. WAITT / ELECTED ACTIVE MEMBER / 1905 engraved at center of wreath I Medal dated 1911. 487.1 grains; 38.3 mm.

However, if the coin has ever been cleaned, retoned, or dipped too often, the lustre will be reduced to some degree. And, of course, some coins are made better than others.

1793 Chain AMERI. large cent, Sheldon-1, AU, lightly cleaned years ago and now retoned a brown color.
1912-S Liberty nickel, Gem Uncirculated with light iridescent toning.
Numerical Grading Systems ...

Original - Referring to any aspect of a coin that retains its original state. Original toning means natural, not retoned or cleaned. Original luster means undisturbed luster that hasn't been enhanced through artificial methods.

On this coin the metal of the coin was engraved and retoned, but it really makes no difference if the patina was carved, or solid metal engraved, it is at best fraud bordering on forgery, even though the base coin was genuine.

The toning quality is of a very natural and pristine character. Coins that have been dipped and are retoned may appear rather dull or flat looking in their colour quality by comparison. See Toning and Artificial Toning.

BB2019. Sel. and Pieria, Gabala, Caracalla, AD 198-217, AE25. Emperor head rt./Tyche stands left holding rudder. Near centered, cleaned long ago leaving slightly uneven surfaces and now retoned brown, clear portrait and rev., Fine ...

more than $500 but not in a PCGS or NGC holder must be viewed with suspicion. Coin World is full of ads offering seemingly remarkable values on "raw" coins. In my experience, nearly all of these are either overgraded or, even worse, cleaned, retoned ...

Lettering or other devices have a doubled appearance under magnification REPUNCHED Mintmarks/dates are added after the die is made and are often not punched deeply enough at first or after some usage become unclear and are repuched RETONED A ...

See also: Coin, Silver, Grade, Dollar, Obverse