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<p>[QUOTE=&quot;Conder101, post: 2140839, member: 66&quot;]Compugrade was only in operation for about 4 months in the latter half of 1991, The INS slab is an INS 4 that was used from 1988 to early 1992 when INS moved from Washington DC to Philadelphia.&nbsp; The INS 5 slab was apparently used only briefly because INS seemed to disappear from the scene shortly after they moved.&nbsp; they did resurface very briefly with INS 6 in 1997, I have only seen a single example of that slab back in 2001, and not another one since then.&nbsp; (It may no longer exist.&nbsp; The coin in it was probably broken out long ago to be put into one of the top four TPG slabs.&nbsp; I would have loved to own that slab, but I couldn&#039;t afford a PF-63 1840 half cent just to own the slab.)</p><p><br /></p><p>So anyway this coin was probably sent the Compugrade and then cracked and sent to INS sometime between Sept of 1991 and Feb 1992.[/QUOTE]</p><p><br /></p>

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