Special speaker Mercedes Benz W123 T-model (pair), Special speaker W123 T model.
mercedes w123 GREEN interior rear speaker panel
Radio, Speaker Upgrade. : r/w123
Replacement Speakers - MBWorld.org Forums
Amazon.com: Fcovergurus Dash Cover Mat Custom Fit for 1977-1985 Mercedes Benz 300D 300CD 300TD 240D 280E 280CE without Cutout for Speakers, Dashboard Cover Pad Carpet Protector (Black) F143 : Automotive
Found front speakers that fit well in a w123 wagon! - PeachParts Mercedes- Benz Forum