Found the locked locker on the 3F near the West Storage Room? This Resident Evil 2 3F Locker Combination Guide will tell you the combination to the locker so that you can open it well ahead of time and take the items from inside.
You can find this specific locked locker on the 3rd floor of the police station. It’s very close to the West Storage Room, directly next to the room with the mannequin where you find your first key, the Spade Key. Just outside that room is the locked locker.
Resident Evil 2 3F Locker Combination GuideThe Safe Combination is the same regardless of your character or whether or not you have discovered the clue. Walk up close to the locked locker and then interact with it. From here, you can enter the 3 digit code required to unlock the locker.
Once you enter DCM and hit confirm, the locker will slip open and you can claim the items inside.