Hi there -
silly, silly (silly) guess here -- but could the first word be " Maestro " Something. Aren't glass makers know as that, and could the last word be his name.
~~ This is OF COURSE, just a guess here.......maybe I am just seeing things here.. 
This (may??) be something or nothing as I can not find an example of his signature on this Link, but it does talk about a
MAESTRO Daniel VARGAS that has been blowing glass for over 4 decades
http://www.dynamicdecor.com/pages/blown-glass-art.htm
It also states there (quoted from the above link):
" SIGNED BY THE ARTIST, MAESTRO DANIEL VARGAS"But not sure IF he used Maestro, or signed it Maestro Vargas.....So just throwing that out to you folks, as I can not find an example right now to see IF he used the word Maestro, so








?
Just thinking out loud here.......Duh
Also -- Just throwing this out there too......I found that some of the YSART people had their names changed, but since I know nothing about Ysart Glass...could this be a Possibilty at all.
As I found a MORENO ISART -- Glass blower that name was changed to Ysart.... so this is a real

?? for me as I nothing nothing about it, but throwing *thoughts* around...
http://www.ysartglass.com/Ysart/YGpeople.htm :huh: :huh: