Can anyone identify this sideboard?  

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Maybe Kurt Østervig, bigger pics with details would be helpful.
Enso-Gutzeit is a Finnish pulp and paper company and I'm pretty sure they didn't manufacture furnitures, it's just a label of the wood producer.
By the way the company's headquarter in Helsinki is made by Alvar Aalto, but first this is off-topic and second he designed better buildings.

Helping hand
Helping hand

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Oh no way, not Kurt Østervig, similar to Ico Parisi style, but no idea.

Don't know who did it, but...
Don't know who did it, but it's obviously Danish, not Italian.

Looks more swedish to me,
like Bodafors for instance.

Old myopic me...
I just can't wrap my arms around the side braces/legs. I would enjoy this piece mounted to a wall, sans the legs. But then, I'm gonna keep looking at it, and perhaps I'll fall in love. The side legs/braces seem to be an afterthought. I'm usually wrong.
Many thanks for posting this piece.
Aunt Mark

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New suggestion, I'm pretty sure it's Harry Østergaard for Randers.

dunno Mark
I rather like the confidence of those braces. It helps that they appear to be well made (always helps...eh)

My first impression, too, Mark.
Now, after a few viewings, it's not changed. The supporting structure is simply not doing it for me. I'd rather see the two cases hung cantilevered from a wall.