Question about JSA.

Hi there. I am looking at buying a few 8x10 photo's off ebay. The ones I am looking at the seller said they are certified by JSA. When looking at the sticker that is on the photos it just has James Spence (looks like a sig) on them. The seller doesn't have a cert card pictured either. I usally collect psa/dna certified items and I know that the cert number is on the sticker and on a the card. Do you think these items are legit? Thanks in advance for any help.
0
Comments
http://spenceloa.com/services.asp
scroll down to Stamp of Approval
Commissions
Check out my Facebook page
So this stamp of approval means that JSA looked at it and determind that the item was authentic? So is this service any good? Or is this another quick opinion like psa uses on ebay meaning it looks good, but we didn't spend much time looking at it and just said yeah or neah. Like I said I usally collect things authenticated by psa, the few things I do have authenticated by jsa has a cert card with number on it.