Throwback: Glee Club in 18??

To kick off the season of weekly archival postings, here is an image of the Princeton Glee Club in its early years! However, we are unsure about the exact date. Members used to pair their voices with banjo and classical guitar.
Does anyone know what the man in the front is holding? When this is from? 

All of the archive postings are found in the Mudd Manuscript Library.