Quote:
Originally Posted by ejharrington
Can anyone tell approximately how long ago this submission was done based on the certification numbers? Thanks
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Summer 2013.
I do it by searching for a year on COMC, then filter by Graded/PSA, then sort by Recently added and go to the last page.
Here is one from Panini Father's Day set which has a 21,8xx,xxx cert number:

2013 Panini Father's Day - Studio - Lava Flow #22 - Robert Griffin III [PSA*10*GEM*MT]
Courtesy of COMC.com
So it was graded in Summer 2013.