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<p>[QUOTE=&quot;davidh, post: 436694, member: 15062&quot;]Wow - nice set of coin types.&nbsp; I&#039;ve often thought about starting such a set, however I was wondering several things about something about type sets. </p><p><br /></p><p>Why is the 1909 VDB cent considered a separate type?&nbsp; If you argue that the removal of the VDB makes difference, then why isn&#039;t the addition of VDB in 1918 considered a type change?&nbsp; Why not different types for the Indian cent in 1864 with or without the L?</p><p><br /></p><p>The metal composition change in the Indian Head cents in 1864 (from Cu-Ni to Cu-Zn-Sn) is considered a type change.&nbsp; However, the composition changes in Lincoln cents from 1944 through 1946 (Cu-Zn) and reverting in 1947 back to the 1909-1942 composition (Cu-Zn-Sn) is not a type change.&nbsp; </p><p><br /></p><p>How about large mottos vs small mottos in the 1864 two-cent coin?</p><p><br /></p><p>The OP&#039;s book has only a single hole for three-cent silvers when there were actually three different types.</p><p><br /></p><p>Maybe he didn&#039;t show a page but what is shown doesn&#039;t even have a space for the 20-cent piece.</p><p><br /></p><p>There are numerous other examples (such as the scores of differences in the half cent and large cent coppers) but my basic question is - what determines a &quot;type&quot; that is different from others?[/QUOTE]</p><p><br /></p>

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