What is the oldest brand of anything that is still working and not working?

Question

I know Vacheron Constantin was in 1775 but anything older?

Answer 1

"Borden's" canned milk was developed in the 1840's and 50's for the troops in the civil war period, along with refrigerated railway cars.

Of course if your considering wines etc. Archaeologists found olive oil in sealed jars 3,000 years old at the bottom of the Aegean sea. We do have to draw the line somewhere.