Sons School project

AAProject

Hi all! I'm trying to help my son identify this bottle as a part of a school project. His 6th grade teacher went scuba diving in the lower Niagara River and pulled out a collection of miscellaneous bottles, that presumably went over the falls. Now he must write a story of how it came to be there. How awesome if he could give some actual history of the bottles origins.
BOTTLE DESCRIPTION
Amber in color beverage bottle,
Lg rectangular indent for label running the length of the bottle,
Rounded lip not twist off
Seems run up both sides top to bottom,
Bottom has what I would describe as coin slot groove,
26. C-35 marked on lower back of bottle near bottom.

piggler

Looks like a pectin bottle, for making jelly ect. Usually have markings and measurements on the indented side. Most likely 40's to 50's vintage I believe.

AAProject

Thank you! I don't see measurements on the side...but it was under water some time.

piggler

Here are some examples... Maybe yours was used for a different purpose, hence the lack of embossed measurements, I am unsure. The bottle shape is the same as far as I can see.

Jeff