Looks like an ink....has COSTAR on bottom

[OmegaFirefly]

Very crude bottle that looks like an ink of some kind to me. Need some help in identifying it.
It is 2-3/4 inches high, cylindrical in shape, and has a 2" diameter base.
Is aqua and very crude. It has embossed on the bottom COSTAR. Please see photo and let me know if you can ID it.
Thanks very much,
Dave

 

[OmegaFirefly]

Photo #2 of Ink

Thanks for looking.
Dave

 

[epackage]

RE: Photo #2 of Ink

Sounds like it wasn't an ink but an imatator of Lyon's Powder....Jim

https://www.antique-bottles.net/forum/m-134137/mpage-1/key-costar/tm.htm#134142

 

[epackage]

RE: Photo #2 of Ink

Here's some envelopes from the company...

http://stampauctionnetwork.com/y/y96437.cfm

 

[OmegaFirefly]

RE: Photo #2 of Ink....COSTAR

Thanks for the information, Jim. Very helpful.
I certainly appreciate your time.
Best regards,
Dave

 

[epackage]

RE: Photo #2 of Ink....COSTAR

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[epackage]

RE: Photo #2 of Ink....COSTAR

Most likely not a poison, please read what I posted here...Jim

https://www.antique-bottles.net/forum/m-461953/mpage-1/key-/tm.htm#462336