Yes, help certainly needed. 

Graham

Edit

Poster print with confusing glass reflections?

I think that poster was done by Per Arnoldi.  I am not exactly sure but it might be from the late 1980's. 

The artist is indeed Per Arnoldi. 

http://www.worthpoint.com/worthopedia/per-arnoldi-o-bang-olufsen-print-138591888

Pardon me if I'm ignorant, but can anyone explain the alleged connection with B&O? I see two black rectangles connected with a rainbow, totally unlike my Pentas.

Per Arnoldi B&O Bang Olufsen Print Signed Numbered Ltd

Original limited edition litho print on heavy gloss paper. Hand signed by Per Arnoldi. Numbered 299 of 500 Artist conception as commissioned by� Bang & Olufsen of the B&O 6000/8000 Penta series speaker.

(From the above linked eBay auction record).

Graham

Oh, the 6000/8000 Penta series speaker! That explains it all 😁

Apparently legit for what it is then. Carry on.

tournedos wrote:

Pardon me if I'm ignorant, but can anyone explain the alleged connection with B&O? I see two black rectangles connected with a rainbow, totally unlike my Pentas.

It isn't an alleged connection.  It was commissioned by Bang & Olufsen.  Per Arnoldi is a famous Danish artist who has done many posters and paintings. His works were also on exhibit at the Museum of Modern Art in New York city and many others.  The reason I know about this is I have this poster which was given to me by my local dealer in the late 80's.  I also have the poster that looks like the Beolab 5000s.

http://en.wikipedia.org/wiki/Per_Arnoldi

Thanks everybody,

Now I know it is indeed related to B&O