Here’s something you don’t see everyday…  a collection of Recordgraph Amertape recordings from WW2:  

The seller also has a dedicated website about the collection that is up for sale with audio samples:

Apparently the seller had them transferred by Poppy Records in the UK, who custom built machine just for this project:

Not sure about that asking price, but nevertheless a fascinating audio artifact from a pivotal moment in the world’s history that I thought was worth sharing.