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One label looks like E311-23UT3 (not sure on those first two characters though).
Other looks like ?9 -24743 (can't make out first character).
Dunno if either label is relevant!
There's a few other similar layouts across a few different boards if you just search for the chipset, so it might have been based off a template. All of the others are SIPP though. Here some of the pictures and the diagram is with discrete chips at least.
TheRetroWeb is a volunteer project, so sometime mistakes are made. The pictures of those boards with SIPP foorprints may well be from before the other similar boards were added to the database.