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<p>[QUOTE=&quot;physics-fan3.14, post: 3170092, member: 19165&quot;]I think &quot;series&quot; and &quot;type&quot; are often used interchangeably.</p><p><br /></p><p>However, to get a little more technical, there are often various &quot;types&quot; within a &quot;series.&quot; For example, within the Buffalo nickel series, there are Type 1 and Type 2 based on design changes. Same with Standing Liberty Quarters, Shield Nickels, etc.</p><p><br /></p><p>So, a &quot;series&quot; set would just get one Buffalo, whereas many &quot;type&quot; set collectors would want one of each major design type.</p><p><br /></p><p>Your example of the Liberty nickel with Cents or without Cents is sometimes considered a variety, sometimes considered a type. I don&#039;t consider it a variety; a variety is more accurately a one-die variation. Varieties are sorta like errors, with the exception that varieties are a die issue - all the coins from that die are going to make that variety. The 1942/1 Merc is a variety. The 1955 DDO Lincoln is a variety. An error is a one time issue - completely unique, because only that coin is going to have that error. The major design change of adding a word to the reverse of the nickel is more accurately considered a type.[/QUOTE]</p><p><br /></p>

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