There is now an actual product for modifying old sports jersey nameplates
Pittsburgh Steelers #10 Game Issued Black Jersey Name Plate Removed 46 DP49468
Jersey Nameplate Plaque Name plate, Plaque, Jersey
J1 Blackinton Fire/Police/EMS Name Bar - Custom Engraved Uniform Name Plates
Custom Baseball Jersey Red Mahogany Nameplate with Business Card Holder (Personalized)
Got my jersey nameplate replacement from Twillworks for a new AJ Brown Jersey! : r/eagles
Personalized Locker Nameplates, Magnets & Decals
One Color Custom Nameplate - Choose your colors, set you name
Custom Engraved Name Plate For A Baseball Jersey Display Case Or Photo 1.5" X 8"
Name Plate for Jersey-NamePlate
2 x 8 Traditional Full Color Desk Name Plate - Corp Connect