I believe that I have purchased the powder bowl (on eBay) in question and I can be certain that it is a marriage. The lid is to small for the bowl and though the green is the same colour the density of green between the bowl and lid is very noticeable, as shown in image 1.
I went in dispute thru eBay as the vendor, wrongly described the lid and bowl as being originally together and he did not mention small bruise to applied foot.
The outcome, within two hours of submitting my claim, I was offered my original claim of a 50% discount.
The second and third images show the difference between a post and pre war OB shape powder bowls.
The pink one has a post war Monart label OB 1X.