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<p>[QUOTE=&quot;physics-fan3.14, post: 7335218, member: 19165&quot;]I hopefully can give some answers: </p><p><br /></p><p>1. Short answer - yes. The &quot;brockage&quot; will be an incuse and inverse example of the other side, as shown on the OP&#039;s coin. </p><p><br /></p><p>Long answer: Let&#039;s think about what is actually causing the brockage. </p><p>- A planchet is struck to form a coin. Obverse and reverse have the image they should have. </p><p>- That now-struck coin, instead of being ejected from the coining chamber, instead sticks to a die. </p><p>- A new planchet enters the chamber</p><p>- As the hammer comes down to strike another coin, instead of the die making contact with the planchet, the previously struck and stuck coin makes contact with the planchet</p><p>- The previously struck coin has raised details. Let&#039;s say for argument that the facing side is the reverse (the obverse is stuck to the die). In that case, the planchet comes in and the bottom rests on the anvil die (usually the reverse.) The hammer die comes down to strike (which would normally be the obverse). However, because the previous coin stuck (the obverse side stuck to the obverse hammer die), now the &quot;face&quot; of the &quot;hammer die&quot; is actually the bottom of the previous coin - the reverse. </p><p>- When the hammer die comes down, the reverse of the previous coin is now the &quot;die&quot; on the &quot;obverse&quot; of this next planchet. </p><p><br /></p><p>2. For this reason, a brockage will *always* be an incuse, mirror image of the other side. Most of the time, the obverse is the hammer die - and we know this because almost always, the planchet will stick to the hammer die, not the anvil die. </p><p><br /></p><p>The planchets stick to the hammer die simply due to the way the machine works. The anvil die moves very little, and the feeder fingers serve to push the coin out of the coining chamber. Any planchet stuck to a hammer die would be mangled quickly. However, coins are much more likely to &quot;cup&quot; around a hammer die. </p><p><br /></p><p>Think about taking a literal hammer and hitting a softer piece of material. There will be a compression where the strike occurs, and the rest of the material will bend up around the hammer. This is exactly what&#039;s happening in the case of the capped die and brockage we&#039;re talking about. </p><p><br /></p><p>3. The horizontal vs. vertical aspect really doesn&#039;t change anything in this discussion. There is still a hammer (usually the obverse) and there is still an anvil (usually the reverse). The advantage of a horizontal alignment is that gravity will drop the struck coin out of the coining chamber instead of needing a mechanical feeder finger to do the job. Because of this, there are less mechanical malfunctions of the type which lead to die caps and brockages - making these sorts of errors less common on modern coins. These presses work lightning fast, striking hundreds of coins a minute. As far as I know, these presses started coming online in Philly in the early 2010&#039;s. I don&#039;t know about the other mints.[/QUOTE]</p><p><br /></p>

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