Something interesting found.

[grimes]

Guess these were a promotional item back then.

Oil from the engines of the Graf Zeppelin during the first intercontinental flight in 1928.

[JohnB]

Wow, that's interesting.
Probably worth a bit to an airship memorabilia collector.

[K5DH]

Worthless bit of "sorta related" trivia: Tide Water Oil Company eventually became known as Getty Oil. I worked for Getty in the late 1970s and the Veedol name was still used for their oils and lubricants.