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I welcome it!It is too late for me to go dig mine out and take and post pictures...
Here's the video for your type of buckle.
As @happy-diver refers, yours is slightly different than many scuba waist buckles, which have all three slots next to each other on the same side as the face plate (yours has the third slot on the opposite side of the first two). I prefer the kind where all three are on the same side, since the excess webbing feeds back towards the direction it came from and is out of the way. With your buckle, the excess webbing goes past the end of the buckle.