bikerumor monday mystery pic

Photo from the collection of Rustybicycle. If you think you know what this is, post your answer in ‘comments’ section– the answer will be posted there on Tuesday!

To send in your own Mystery Pic to be considered for the Monday feature, click here and attach your photo with all pertinent information.



  1. Miniature speakers that you use as bar-end plugs. Bluetooth compatible, so you can listen to music from your Android while you ride.

    Maybe not, but that’d be cool.

    • Answer from our source: Classic bicycle horns, “These are interesting in that you squeeze the black rubber and it lets out a nice little horn sound. From the 1950 – 1960’s I think.”

What do you think?