eldegas.com

Well, here's something you don't see every day.
A pitch pipe and guitar pick set for spanish guitar, with El Degas branding on the case.

http://www.ebay.ca/itm/EL-DEGAS-SPANISH ... SS:CA:3160

That's a weird one by today's standards, but "back in the day" it was normal to tune your guitar acoustically. No such thing as an electronic digital tuner.
I was teaching in the 70's and used my round vocal pitch pipe to tune the El Degas. Still have it in the case as a memento.