Hi, I haven't asked too many questions recently, but am stuck on this one!

I collect glass glassblowers and I bought this one to add to my collection.
It was advertised as by Erik Hoglund (although miss-spelled), Kosta Boda.
When it arrived I thought it looked a little odd as I have never seen one of these with a grid moulded backing, and the figure seems very roughly pressed or moulded.
Has anybody got or seen a similar one that has the usual back that the other pin dishes have?
Have I been sold a badly made copy or a rare and unusual piece?
Any help would be appreciated.
