Kaser Bondor black sheer negligee / nightdress 1940s or 1950's?

I am getting ready to list this thinking it was 1950s at the latest and since looking up the adverts and the label resource I'm beginning to wonder if it's not earlier. Certainly a lot of the ads around 1950 have the frilled hem and sweetheart neckline but I haven't been able to find any with the shirred waist (most are tie back) or drawstring shoulders/off the shoulder style. I've only had the shirred waist on 1940's dressing gowns before. The sleeves are quite puffy (they should be more gathered at the bottom too)
P.S. the bottom line of the label says 'not quite perfect' - the shirring at the neckline has a gap, but I can't make out what the middle line is.

 

Boy, that IS dreamy... late 40s maybe?

 

thanks, well somebody liked it, it sold in 15 mintutes of listing!

 

wow!!
Do you mind if I ask what it sold for so quickly?

 

It was in response to an ISO post on OLL and it matched her brief and measurements. I had a quick look on ebay beforehand and there was nothing half as nice and modern sets selling for more. I sold it or £85 The drawstring off-the-shoulder ties were my favourite bit too! hard to display on a mannequin though. I ended up pinning the ties.

I might have to take a pattern of this before posting it!

I should still like to hear anyone's opinion on narrowing the date down as we do not have this label in our Label Resource.