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<p>[QUOTE=&quot;lrbguy, post: 3856080, member: 88829&quot;]They differ in module size.&nbsp; The coin dies were designed for a module of 16x17mm and 2.45 grams or so.&nbsp; However, when they had to adjust for inflation they sometimes used smaller planchets in the same dies, resulting in modules like 13x15mm at 1.67g, with clipped lettering.&nbsp; However, there is some crossover.</p><p><br /></p><p>My rule of thumb is this: when I can read the full mint mark <i>and</i> full top lettering, and the weight is 1.90 or above, I class it as the earlier RIC VII 156.&nbsp; Otherwise it is the later RIC VIII 28.&nbsp; However, I have not done or read any studies which verify these limits, so all this material is on the same page in my collection.&nbsp; I have 3 examples of 156, five examples of 28, and one that breaks the rules (shows all lettering but weighs 1.36g).&nbsp; You&#039;re reminding me that I should probably reweigh that last one.</p><p><br /></p><p>Actually, the obverse bust size is a good indicator of which module you have.&nbsp; The smaller module bore a smaller bust.&nbsp; My &quot;undecided&quot; is actually a 28.</p><p><br /></p><p>Add: forgot to note that your coin appears to be the earlier 156 despite the weight.&nbsp; And it&#039;s not a mule in the sense of an accidental mixing of die types.&nbsp; Two mints used this combination as regular fare.[/QUOTE]</p><p><br /></p>

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