A nice touch is the Potter & Brumfield brand plate, which gives the relay a classic, no-nonsense look.
Essex/Steveco 90-293 RBM Type 84 Relay
I like how the heavy duty housing protects the coil, even the panel sees bumps and knocks sometimes.
The model value is N/A, so you can match the relay by pin count and mounting style instead.
What stands out about this relay is the clear Littelfuse branding on the casing.
You'll see the model number 4016819 printed clearly on the side for easy identification during setup.
The Allen-Bradley brand stands behind the relay, and that matters when wiring panels.
What stands out about this relay is the balanced blend of size and capacity, which keeps builds without excess bulk.
You will find that the relay reacts quickly to control signals, giving your prototype a responsive feel without overcomplicating the logic.
If you are used to White-Rodgers parts, this relay will feel right at home in your collection.