Last seen: 29-Mar-1924
Brand(s): Le Premier
I have found only a single reference to the 'Le Premier' tubes, dispite their being advertised as 'famous', I suspect this is a true french import given the G-12 envelope shape. In the rendering, it appears almost identical to vertical-cylinder 'Le Clairiton' tubes that were more widely available.
I would love to hear from anyone knowing of an existing example of this tube!