Brass Flask & Brass Keys

Description

Brass Flask & Brass Keys.
Flask has C.S.R on one side.
Flask has 1776 on one side.
Flask has chain attached.
Flask has screw top.
Flask is three and a half inches wide,  four and a half inches tall, 2 in in depth.
Brass keys are 6 and 1/2 in,  6 in,  5 in, 4 and 1/2 in.
I have searched this flask and I cannot find anything to compare it to. I do not know if it's vintage or antique or reproduction. The same with the brass keys.
All pieces are brass and have weight to each of them.
No returns.
All sales final.
Thanks for looking!  Maybe you can find the answers that I could not 🙂