I have recently found some very desirable unused original old-stock aluminium sound-box diaphragms. The ones pictured are fluted and with a diameter of 55mm. They are made for Columbia boxes, I suspect, but could be readily adapted for many other sound-boxes.
Here are a selection of needle tins that were available to customers from the early 1900s. They are now collector’s items and can be interesting and not expensive items to look out for. The selection below are in trays 1-4 and you can identify particular tins by using a code, so that […]