Photo of Women taken Alexandria 1930-50's

[HOUSE2000]

Unfortunately the library and the County Reporter newspaper can't shed any light on my photo but I'm still hoping that someone can help me. I would guess the photo was taken sometime between 1945-1954 - my Granny died in 1954 aged 67. I would like to know where it was taken and what the occasion was. I'm hoping someone perhaps has a copy of the photo or recognises one or more of the women. My Granny lived in the Arden/Luss area and I assume the photo was taken not too far away from that location but I might be wrong. Previously she had lived in Balloch and the women may be friends from around there. Could it be something like a SWRI group? They each have a glass and one of them has a decanter so they seem to be celebrating something. Any help would be appreciated. Thank you.

[HOUSE2000]

The photo was taken by Alexandria photographers Leddy and Glen and there is a reference number on the back A 2147 4081. Does anyone know if this number can provide any clues about the photo? It's possible that it was not taken in Alexandria but somewhere in the surrounding area. Any help would be appreciated. Thank you.

[HOUSE2000]

Still hoping someone can shed some light on the photo. Thank you

[TerriG]

I'm attaching a photo of my Step-Granny, Elizabeth Duncan Menzies, who married my Grandad, Peter Nelson McKean in Balloch in 1962.  I think there is a likeness to the lady in your photo who is on the back row, third from the left.  What does everybody else think?