1988-D transitional reverse

I belive I've found a 1988-D with the 1989 reverse. I'm having a little trouble finding anything newly published on them. Are they more common now than when first discovered?

 

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http://www.lincolncentresource.com/Featured/1988RDV6.html

Its a fairly new discovery, so the more people that know about the variety the more will be found...