Taken from some vintage Philips 908 amplified turntable. Images by this advert show the one that I sell. Outer dimensions of the cap are 13.5x13.5x11.2 mm and it can be fitted onto any square pin  with 3.3x3.3 mm cross section or rounded pin with 3.5 mm diameter. MESSAGE TO POTENTIAL BUYERS FROM CANADA: Your customs control is obviously very rigurous so delivery time may be about 40 days and please do not ask me where's the item and do not open cases within 40 days from the moment I would mark it as "shipped".
Current  pandemic has caused delays in delivery worldwide so please ask for estimated delivery time before placing the order or do not ask for refund if the item would not be delivered on time. On one day, sending from Croatia to some country is allowed, but next day it's not. If you want to buy something for somebody's birthday or for your store's customer or for anyone who does not want to show understanding for this situation, please pass me by.