RARE Vintage Pyrex Divided Glass - Reverse San Serif Stamp

This one is tricky to take photos of, and I’ll do my best to include all the details I know about it. A Pyrex expert might know more. I have been told it may have rested inside another metal dish or ring. I attached a screen shot of the logo on the dish- it noted it’s pre-1930. Strangely the logo is a mirror image of what it should be, but still raised.
Some have suggest this divided dish was an insert of some sort? It does have a bit of a lip that makes me think there could have been a lid.
There is one chip... and a few flaws I think have been there since it was made. (Like a line inside the glass- not a crack.) And two “scratches” that I also think are from production, but for those I am not 100%.
So, here you have an odd, possibly pre-30s, Pyrex accessory? If you’ve-hunted for it to complete your set or if it’s unique piece to add to your collection, here it is!