eMail Symbol ...

... this is the next one of a series of simple, little »symbol illustrations« I’m making for an instructional/referring book on cryptography and network security. It will be a non-intimidating guide for the »common man« similar to the »... for dummies« books.
My task is to make symbols to chuckle about. This one – the eMail symbol – is a traditional post-horn, a valveless cylindrical brass instrument used by mail coach postilions in the 18th and 19th century, with an integrated @ symbol.

My first two symbol illustrations you may find here: http://drbl.in/krHw

For a more detailed view please check @2x!