Why does this Nintendo Switch cartridge have the ROM labeled on it

Nintendo 3DS Architecture

Nintendo Switch/3DS cartridge lifespan - The Independent Video Game Community

Does it normally have a ROM number on it? : r/mariorabbids

Pokedex Nintendo Switch Game Cartridge Case Storage Display

Why does this Nintendo Switch cartridge have the ROM labeled on it? : r/ Switch

Sonic Origins “Plus” : r/NSCollectors

Are Publishers Using Lower Capacity Switch Cartridges? : r/NintendoSwitch

R4 cartridge - Wikipedia

As a collector, would you keep the cartridge as is, or replace with label with new one? Which is more valuable to you? : r/gamecollecting