Pepsi Lighted Sign - Value?

[glenmc]

Hello -

My grandmother operated a general store in Ontario, Canada from 1940 to about 1972.  She had numerous items, but one of them is a Pepsi sign.  As part of an estate settlement process, we're trying to figure out if this is a collectible and what it might be worth.  Sign is about 16" wide and 7" tall - depth is about 5".  The front display is made of plastic, and the back is metal.  It was intended as either a table display, or it could be hung.  Stamp on the back indicates it was manufactured in Toronto, but we can't read the maker name.  Sign is illuminated with a max 40w bulb.  It has no switch, it just plugs in.  Picture attached.  Any help is appreciated, I can't seem to google up an image of anything that looks quite the same.  Condition is very good, no cracks.  Thanks!  Glen