I am posting this on behalf of Sue Tate, who is offering an octagonal Orlak serving dish with lid, which sits inside an EPNS container on four ball feet. Orlak oven-table-glass ware dates from between 1929 and 1933.
The container has a small 'Art Deco' emblem on 2 opposite sides. It is marked:
From this I have determined it was made by C.W. Fletcher & Sons Ltd, a Sheffield-based company that operated from 1891 and is still in business today supplying components to the aero industry.
The glass dish has a Patent No. 339484 and ORLAK A100 pressed into the lid and base.The base still has its original paper sticker stating 'ORLAK Oven-table GLASS --- A100 3/6 each --- G100 2/3 each'*. I think the two prices indicate lidded, and non-lidded variants, but cannot confirm this as yet.
*For any younger collectors, 3/6d = 17½p and 2/6d = 12½p