Is lustre present on all UNC & AUNC silver coins (1900-1945 era)

Basically I was wondering if any of you know if all silver coins from the 1900-1945 era in UNC or AUNC condition should have lustre on them, I have seen a few coins usually of certain types and countries that does not seem to have it despite them looking mint condition ?

 

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I thought luster was desirable and necessary for higher MS grades, but not necessary for it to be MS...for example MS60

 

By traditional grading standards, an uncirculated coin should exhibit full original mint luster. In lower-end uncirculated coins, luster may be dull or otherwise impaired but should be continuous across the surface of the coin. Breaks in luster can be taken as signs of wear. An AU coin should exhibit a minimum of 50% original luster.

 

This isn't an anomaly!: https://www.ebay.com/itm/1878-S-Mor...172581?hash=item2cab47d525:g:shMAAOSw~oFXFze~

Does it help to answer your question?

 

Firstly thankyou for all your comments, they all help me immensely, I have had coins where the lustre was hardly showing under heavy toning until that was removed, some coins it seems some of the designs dont lend themselves to lustre easily.

 

I stand corrected.

 

Are all silver coins made with lustre though ? is there any that were manufactured that didnt have it or it was very faint, either from the finish or design ?

 

Since I've opened my mouth and been wrong, I should keep shut, but I think proof coins lack luster......now I'll wait for @GDJMSP to correct me.

 

From what's been said, it seems to me that those who dip their coins could, MAYBE, destroy any luster? I suppose this could depend on what chemical is being used to alter the coin's surface synthetically.

 

I collect MS coins with original toning and although they are not flashing white they do exhibit luster when viewed in a raking light. Many 19th century coins have wonderful toning and I always check for the luster remaining under the toning.

Even some XF coins have areas of original luster which is normally found next to the devices such as stars and letters.

 

I learned my lesson for the day thanks to Monitor. Be safe all

 

I have used dips and it has not effected the lustre from what I can see, if anything as long as its done carefully it has let more of it appear, but doing this too often or for too long would remove the lustre I reckon as its a type of acid at the end of the day.

 

Kentucky, posted: "I thought luster was desirable and necessary for higher MS grades, but not necessary for it to be MS...for example MS60.

Actually, YOU are CORRECT. While old timers (Doug & I) and very conservative graders stand by the ORIGINAL (which should have never changed STANDARD) definition of MS: NO TRACE OF FRICTION WEAR; it is no longer used. Greedy Coin dealers and TPGS's have corrupted that old standard and made it obsolete.
Today, very many coins considered to be/bought/sold/ or professionally graded MS are not!

Silverfinger©, asked: "Are all silver coins made with lustre though ? is there any that were manufactured that didnt have it or it was very faint, either from the finish or design ?"

"LUSTER" is the reflection of light from a surface. Most things around you have luster, even plastic and wood!

"MINT LUSTER" is specific to coins. It is the reflection of light from their surface. Newly made coins have it. That includes casts and struck coins. Coins with a matte surface also have Mint luster.

 

Yeah I meant mint lustre, or cartwheel lustre.

 

I didn't realise that toning can damage the lustre, good to know.