Stock standard T10 and based on Australian ads is probably around 1952-53. I have repainted it and have a spare hood for when I light it up, but not until I get a spare globe to use. The existing one appears to be original. The chromed air nuts are ever so slightly larger than the brass replacement ones that can be purchased.
You either love them or hate them, I love ‘em! That’s a very nice looking example, well fettled. I too have one in the line awaiting paint.
This link shows the relevant paperwork. https://classicpressurelamps.com/threads/1950s-bialaddin-table-lamps-advert.1449/
I'm not sure, but the glass which is on my T10 has a Phoenix logo on it and the colour of the logo is orange.
@Jean J Yes, I believe the one on Sedgman’s is the correct style. The globe on mine has an squared off shape at the base. But, don’t take my word for it!
The glasses which have rounded bases are correct, as they are for the Bialaddin model 310 lantern, but I'm not sure if the ones which have the green logo are earlier than the ones which have the orange logo.
Can't help with the globe discussion; but interesting. I was asked by @David Shouksmith about the paint colour that I used. It was convenient and close. The spray can was listed as Ivory colour. I used it because it covers well and I gave two light coats on top of a generic quick drying undercoat. After the two ivory coats I added a light spray of clear gloss. Incidentally, the ivory is actually what I use for an almost a perfect match for the Tilley DN250 iron fount. It was ever so slightly more yellow that the original paint on the bell shaped fount sides. The dilemma I had was that the base, sides and cowl were all slightly different in colour. The cowl in the photo with the holes is the spare cowl I purchased. The spare cowl I purchased from the UK is a much, much lighter cream colour than anything that was on my particular T10. The original cowl was this colour which has probably changed a bit due to heat
Regarding the cowl, i purchased one and the glass wouldn't fit inside it , too small, had to return it...
My spare cowl is very exact fit with glass. No slack whatsoever. Only one hole took the chromed air nuts and a half inch drill took off the burr and two fit ok. A small amount more needed for the last hole. The plain brass Bialaddin air fittings fit fine though.
I’ve just checked my globes and find that the shaped one I took to be a Bialaddin is unmarked so may be a repro. The two cylinder shaped ones are both marked Bialaddin, one green and the other orange.