Question - 2005 Donruss Studio Portraits
 

I have a question about the Portraits insert set that was part of 2005 Donruss Studio. Nearly all of these have serial numbered backs like 23/40. However, one of mine instead has “SAMPLE” embossed.

For anybody who knows this issue, what’s the story with the samples? Just certain players or all? Just certain backs (mine is Zenith) or all?https://uploads.tapatalk-cdn.com/202...425964021b.jpg


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