Nope, it's the faint dot at the top left next to the STC logo.
The other 2 are part of the IC' plastic manufacturing.
Well spotted, I concur.
What dot? All I see is a white speck that looks like an artifact like the ones under the T.
Hmmm, the larger faint circle around the white spec may be a Jpeg apparition, if there truly is no larger indented circle in the plastic there, then it is not pin 1.
I just put the image through a Gaussian blurr of 3 pixels in diameter, the larger indented sphere around where the white dot was still shows. Could be a fluke manufacturing flaw dent.
@chrisl photo says I'm wrong and pin 1 is at the bottom left of the package.