I have just ordered on of these off Etsy. I should have it tomorrow or by the end of the week. Mine is used and without a box but a very cool old safety device.
In the US they were called the Harmony telephone in the UK they were called the Tremolo. The only difference was in the US they were tone dialing and had a *&# in the UK it was S & LR
These videos on this youtube channel are all items sold on ebay these videos are inserted in the ebay listings to show physical condition, defects of the item being sold.
