Do I have a GEN1 pipette or a GEN2 pipette?

Here's a GEN1 P1000 Single-Channel (left) next to a GEN2 P1000 Single-Channel (right).

GEN1 pipettes:

• Don't have any marking that says "GEN."
• Are shorter.
• Have the bottom of their body shaped like a trapezoid.

GEN2 pipettes:

• Are always marked "GEN2."
• Are longer.
• Have a square bottom.