Hi Cathy,
I don't believe it's Chance. However, the overall size is similar and I suppose the wooden handles (an unknown Chance feature) could have been added on, but I can't recognise the pattern either.
Not a good photo, but is this an Aussie flower? I'm wondering if Chance shipped the glass blanks to be modifed by the customer? They were also commissioned to create customised glassware, such as ashtrays with company logos, etc.
Edit: There is also US company who also produced glassware from sheet glass, called Houze, see
http://www.houze.com, with printed decoration. Although they finished trading in 2004, much of their earlier output from the 1960s was very similar to that of Chance, although I'm fairly sure most of it was commemorative ware, mottoware and crestware - I have a 1969 Lunar Landing commemorative dish, for example.