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<p>[QUOTE=&quot;Conder101, post: 502243, member: 66&quot;]Some of those are wrong or at least not quite right and need improvement.</p><p><br /></p><p>A blank and a planchet are not the same thing.&nbsp; the piece punched from the strip is a blank, after it receives the upset rim it is a planchet.&nbsp; Your last sentence makes that clear but the second sentence has planchets being punched from the strip.&nbsp; Less confusion if termenology is kept consistant.</p><p><br /></p><p>Bubbles in the plating on a post 1981 cent are not an example of an lamination</p><p><br /></p><p>The Sacagawea dollar with the state quarter design on one side is NOT a wrong planchet error, it is a mule.&nbsp; A Sac dollar struck on a coppernickel clad quarter planchet WOULD be a wrong planchet error.&nbsp; US coins struck on a foreign planchet come on 20th century coins as well, but I don&#039;t think they come on 17th century.&nbsp; Not too many US coins from the 1600&#039;s.</p><p><br /></p><p>Brockage&nbsp; A mirror image of a coin has struck on BOTH sides of a coin??</p><p><br /></p><p>A multiple strike can have image on BOTH sides of the coin from the second or later strike.&nbsp; In fact there are MANY ways to have multiple struck coins.&nbsp; Double struck in collar, double struck in collar with rotation between strikes, flip over double strike (Coin flips over between strikes but falls back into the collar), second strike off center, second strike offcenter with another planchet between one of the dies and the coin, second strike off center with another coin between one of the dies and the coin (In that case the off-center strike will show and partial image on one side and a partial brockage on the other.&nbsp; There are other possibilities.</p><p><br /></p><p><br /></p><p>Overdates:&nbsp; There are only two cases in US coinage where a die was used and then had another cut over the old date and both are 1806/5 coins (half dime? and half dollar).&nbsp; All other overdates before 1909 were the result of a new date being punched into an unused die that had not been hardened for use yet.&nbsp; All overdates after 1908 are actually doubled dies.&nbsp; Late in the year the mint starts making a supply of dies for the coming year and for awhile they are making dies for both years at the same time.&nbsp; Until recently it took mulptiple sweezes of the hubbing press, with the die being annealed between hubbings, to bring up the design fully.&nbsp; If the die was hubbed with one date and then accidently brought back to the wrong hubbing press that was making dies with the other date the result was a doubled die that showed one date over the other.[/QUOTE]</p><p><br /></p>

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