STM32H750 - Which is pin 1 corner ?

About to put my first device in the programmer and don't want to make a mistake. Datasheet says there is a round mark in the corner near pin 1, but of course the package has two round marks on diametrically opposite corners. With the writing correct way up, is it the small circle in bottom left or the larger circle in top right that marks Pin 1 ? I think it's the bottom left as that would match my F407s which don't have this top right circle, but best to make sure first.