Black tarnish on selector switch

Hello I have a eico stereo 40 that has a very tarnished selector switch. I tried caig deoxit and it's not removing the black tarnish what else could be used maybe Brasso?

Toggle Switch 100pcs, Plastic Push Button Switch

2p7t 2 Pole 7 Position 2 Deck Band Channel Rotary Switch Selector With Knob for sale online

NEWCARE HDMI 2.0b Switch 3 in 1 Out 【with High Speed 3.9 FT HDMI Cable】, 3x1 HDMI Selector Switch with Remote,Support UHD 4K@60Hz Ultra HD 3D 1080P, HDCP 2.2 HDR,18.5Gbps HDMI

Pendant Lamp Bucket Light Black Pendant Light Kitchen Lighting Model No. 7612

Tradco Black Porcelain Base Toggle Light Switch, 60mm

Luxury Light Switches - Copper Double Toggle Switch

Hands-On: Tudor's New Silver Dive Watch: The Black Bay Fifty-Eight 925 - Hodinkee

Angle Simple Swivel Towel Hook 3 Arms Matte Black, 304 Stainless Steel Triple Towel Holder, Independent Swing Robe Hook, Flexible Coat Hook, Wall Mount

10 best tarnish-proof jewelry brands to shop in 2023

Tarnish Chicago IL