The tabulator is part of the fourth PlayStation Plus Celebration Pack. Here is the official description of the package:

Grab this outfit and win the Battle Royale with the PlayStation®Plus Celebration Pack.

This package contains:

– Prodigy equipment
– Tabulator decoration is not back
– 2D 'Pizza' emote

(All items are cosmetic and do not affect gameplay)

Resource

DESCRIPTION

FULL INFORMATION

• Title: Rare
• A type: Back Decoration
• How to get: PSN Subscription

MAIN OWNER

Supplied with specific equipment.