From the Moser collection of an expert in old glass, this is a beautiful factory signed example of genuine Moser pre-WW1 enameled art glass.

Not much early Moser glass was signed, so these pieces are rare.  The paper tags in our last pictures above point to the "Moser" single script signature.  This is consistent with Fig. 86 from Baldwin's book "Moser Artistic Glass" (1997), which is shown in our last picture.  These signatures were individually hand-engraved with a diamond tool so each one will vary from the few published model examples.  On this piece the letters "er" came out indistinct; probably because the signature overall is very small.  That incidentally helps to show that this is authentic because a forger would make the mark larger and very clear.  This mark is hard to locate and even harder to photograph.  So - keep the paper pointers!  Remove the collector ID tag if not wanted.

The above is based on our research but we are not glass experts.  We can only guarantee that there is no damage; specifically no chips.  The buyer must be be guided by their own knowledge, and the pictures, and request more or ask questions if needed.