photos of three known Daum fairy lamps.[/url]
I think it is very important to be clear that these are not "known Daum fairy lamps".
At this point, these are just three lamps which you are trying to research. There is nothing wrong for you to hope that a conclusion will be reached that they are Daum. However, as Frank says, a good historian starts from the premise that they are not and then would attempt to disprove that theory, as opposed to assuming that they are, and waiting for someone to disprove that assumption.
The reason for my comment is that posts on this board stay on the internet for ever and unless mysteries like this are addressed precisely, someone may find it on google at a later date and misunderstand the position.
As to the images, which are much clearer, these show that the tops of two have been ground down, which suggests that if they were original, they have been damaged and restored. Unfortunately, the angle of the image of the top of the marine scene does not show whether this is fire polished or ground down.
I have drawn the attention of this thread to an expert who commented, among other things:
"broken vases can be fashioned into fairy lamps, and tree branches
trailing off the edge are indicative, as are non matching tops and bottoms"
and "If some or any of it is Daum it will show from the quality & the
finish, and even if you have a good photograph it does not replace
handling. If it is Daum then it is flawless by definition"
I am not convinced as to the quality, from the images. I just had another look through my various catalogues to refresh my memory of the sort of quality and qualities to expect from Daum. All the pictures I could find seem to jump off the page as being a much higher quality than your lamps appear to show.
I would also interested to know the history of these. Did they all come from the same source? I think you may unwittingly have been the victim of a hoax.
Have you considered having these appraised by a major auction house, such as Christies or Sothebys?