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<p>[QUOTE=&quot;kanga, post: 6440035, member: 9270&quot;]Paper testing continued with the 1928-B $1 Silver Certificate plates.</p><p>Again the objective was to see if a longer circulation life could be achieved by using different papers.</p><p>Test results, if any, were never published most likely because not enough notes were recovered to draw a conclusion.</p><p>Printing was done in late 1932 and the notes put into circulation in early 1933.</p><p>The X-B and Y-B groups were on experimental paper.</p><p>The Z-B group was the control.</p><p><br /></p><p>And again not surprisingly my notes are low grade; higher grades cost beyond what I was willing to spend.</p><p><br /></p><p>1928-B X-B Experimental Series</p><p>[ATTACH=full]1255136[/ATTACH] </p><p>[ATTACH=full]1255137[/ATTACH] </p><p><br /></p><p><br /></p><p>1928-B Y-B Experimental Series (PCGS VF-35)</p><p>[ATTACH=full]1255138[/ATTACH] </p><p>[ATTACH=full]1255139[/ATTACH] </p><p><br /></p><p><br /></p><p>1928-B Z-B Experimental Series</p><p>[ATTACH=full]1255140[/ATTACH] </p><p>[ATTACH=full]1255141[/ATTACH][/QUOTE]</p><p><br /></p>

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