Are you asking this because you found it listed for sale someplace? There's no way to know if it's okay, since even if it were legit but had been used to qualify for upgrade pricing to PSE 11 you could have trouble with it.
To answer your question - yes, potential purchase. I am aware of potential issues associated with purchasing an earlier version that has been utilized for various reasons however that is not why I am inquiring.
Adobe released many variations (ie. full, upgrade, language, educational, retail, oem, etc.) of PSE10 and I was curious if anybody could identify this particular one?
Unless it specifically states otherwise, there's no difference. OEM would not come boxed, if it were legit. You'd get discs in paper sleeves, and the serial number would come from the hardware company that licensed the OEM. The only difference between full and upgrade in PSE is a price rebate, not any difference in what you get, and for PSE 10 they offered the rebate to everyone regardless of whether or not they owned a previous version. If it were a foreign language localization, I would assume the box would be in that language.
What you need to watch out for is pirate ships that sell only discs without valid serial numbers. Look in the site's policies page and see if it says anything about "installation media only" or "for backup purposes only". If so, run away. Also if it claims to be OEM but comes in a box. OEM without the hardware or from a different vendor than the one originally licensed is pirateware about 99.99% of the time.