This exhibit has most of the white lettering including the words Foreign Made. The seal between the pressed glass foot and the envelope is typical Philips.
The glass has a moulded skirt with location pip.
The gaps in the screen show all three grids and the strap connecting the two halves of the anode.
The thin glass tube envelope is 20 mm in diameter and, excluding the B8A base pins, is 57 mm tall.
References: Data-sheet & 1040. Type EF40 was first introduced in 1948. See also1948 adverts.
