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Proton RS-420

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Portable AM/FM stereo radio with battery operation and external antenna connectivity

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Listed

eBay

Proton RS-420 Stereo Clock Radio Alarm AM FM Vintage Retro 1990 Tested Works $26 Jun 29, 2025

eBay

1989 Vintage Proton RS-420 Stereo Alarm Clock Radio Working Auction bid
- Jun 25, 2025
- Jul 5, 2025

eBay

Proton RS-421 Extension Speaker For RS-420 Stereo Alarm Clock Radio 1989 $26 Jun 7, 2025

eBay

Vintage PROTON RS-420 Clock Radio, AM/FM with Aux Input, dual headphone, B&T $38 Apr 19, 2025

eBay

VTG WORKING Proton RS 420 Stereo Clock Radio NEW IN BOX FREE SHIP $175 Apr 13, 2025

eBay

Vintage PROTON RS-420 Clock Radio, AM/FM with Aux Input, dual headphone TESTED $46 Apr 9, 2025

eBay

Vintage PROTON RS-420 Clock Radio, AM/FM with Aux Input, dual headphone, B&T $45 Mar 14, 2025

eBay

Proton RS-420 Stereo Clock Radio Alarm AM FM Vintage Retro 1989 Tested Works $40 Feb 28, 2025

eBay

Proton RS-420 Stereo Clock Radio Alarm AM FM Vintage Retro 1989 Tested Works $39 Oct 26, 2024

eBay

Proton RS-420 Stereo Clock Radio Alarm AM FM Vintage Retro 1994 Tested Works $39 Oct 19, 2024

eBay

Proton RS-420 RS-421 Clock Radio Service Manual Original $29 Feb 11, 2024

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