This is an old Tappan or Singer A/C install from about 30 years ago that still runs. In the first pic, note the cleverly designed drain trap system. I also love seeing the loop of liquid line tucked up. This was a precharged lineset, but I can't help but wonder...where's the extra suction line??
Oh, THERE it is! Coiled up behind the condenser, of course. What a wonderful install this is. I especially like the disconnect/whip.
Of course, the homeowner did his own plug job on the lineset hole: