Harry Coleman helicon bass - 1897

While slogging through an old microfilm of the obscure music journal The Dominant (published in Philadelphia in the late 19th and early 20th centuries), I came across an ad for Harry Coleman band instruments in the February 1897 edition:

The helicon bass featured is pretty cool looking (as is the uniform of the player!), so I couldn't pass up the opportunity to share it. Here's a close up. Enjoy!