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<p>[QUOTE="SamCoin, post: 7816761, member: 119946"]Not totally true. There are two types of doubling on single squeeze dies, the extra thickness doubled dies you described are one, but there are also the center design doubled dies, which are caused when the hubbing begins slightly out of alignment and the process is stopped and started again in proper alignment. In this case, the hub just "kisses" the high point of the convex die preform, which is the center, leaving behind a partial doubled image. The best example of this is probably the 2015 Homestead DDO-004 quarter. These are true doubled dies that received two distinct hubbings, unlike the extra thickness doubled dies that are caused by the hub adjusting during the squeeze.</p><p><br /></p><p>Also, the date of the transition was 1997, not 1996. The 1996 DDO-001/FS-101 Lincoln cent is a true doubled die.</p><p><br /></p><p>Finally, your assertion about grading services is just plain wrong. PCGS absolutely attributes single squeeze era doubled dies as long as they're FS listed (e.g. 2004 FS-801 Lincoln cents - a classic extra thickness DDR).[/QUOTE]</p><p><br /></p>
[QUOTE="SamCoin, post: 7816761, member: 119946"]Not totally true. There are two types of doubling on single squeeze dies, the extra thickness doubled dies you described are one, but there are also the center design doubled dies, which are caused when the hubbing begins slightly out of alignment and the process is stopped and started again in proper alignment. In this case, the hub just "kisses" the high point of the convex die preform, which is the center, leaving behind a partial doubled image. The best example of this is probably the 2015 Homestead DDO-004 quarter. These are true doubled dies that received two distinct hubbings, unlike the extra thickness doubled dies that are caused by the hub adjusting during the squeeze. Also, the date of the transition was 1997, not 1996. The 1996 DDO-001/FS-101 Lincoln cent is a true doubled die. Finally, your assertion about grading services is just plain wrong. PCGS absolutely attributes single squeeze era doubled dies as long as they're FS listed (e.g. 2004 FS-801 Lincoln cents - a classic extra thickness DDR).[/QUOTE]
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