Sunshine 25w radio-valve shaped coloured lamps

Found by my recently in a lot, the seller agreed to split. I was thinking these could be some sort of experimental or war-time type of lamp where they began to use the outer envelopes of radio valves? Sadly, the red lamp is EOL but it has an etch on it (with no makers name) as opposed to the green lamp. They are very nice and curious! (Edit: they were made by Sunshine, who made cheap lamps for Woolworths. After the war there were many left over radio valve envelopes, some of which were used for lamps instead!)