This is Stanleys model 961 300-400 cp single mantle gasoline pendant. It is all AGM parts but not an AGM model as they never sold a lamp like this.
It's taken a few years but this one finally runs. There were some serious issues with it. The lower feed tube was split, the pricker wire was broken and the valve wheel had been glued and melted. The needle valve had a broken tip as well. I spent a day with Stu who had made some new prickers for this type of lamp and we soldered a brass sleeve over the feed tube. He cut the spindle and reformed the tip and then re joined the spindle with a sleeve. I fired it up just now and whilst it is not 100% as there is a halo around the mantle it runs pretty well and after having the lamp for maybe 10 years it lives again.