The Opel brothers ( Carl, Wilhelm, Heinrich, Fritz and Ludwig) on a tandem bicycle, 1912swishswooshSwiss OP t1_iy121au wrote
Reply to comment by wjbc in The Opel brothers ( Carl, Wilhelm, Heinrich, Fritz and Ludwig) on a tandem bicycle, 1912 by swishswooshSwiss
Probably cause not many know the word quintuplet
wjbc t1_iy12qqx wrote
Also because such bikes are rare.
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