Basically a Whyte Laydie 5-string with all five strings running the whole length of the neck, with the 5th string tuned to an octave below the third string. These were made for Brent Hayes, a virtuoso in the earliest part of the 19th Century. Here's a note about him:
In the very back of the circa 1912 Vega catalog is a lengthy writeup of the prominent entertainer, Brent Hayes, where he is called, "the world's highest salaried banjoist". He had just returned from a very successful nine month tour of New Zealand and Australia during which he attracted much attention playing his Vega 5 string plectrum Tubaphone DeLuxe with two bass strings running the full length of the neck and played with a flat pick. Hayes seems to have been both a superb musician as well as quite an interesting character. The British publication, Banjo, Mandolin, and Guitar, ran a long and fascinating series of articles on him that ran from late 1960 well into 1962. Many of those articles contained detailed information about his banjos. Lacking any information to the contrary, it seems logical to assume that Hayes pioneered this version of the banjo and this playing style. As the earlier-mentioned Vega catalog attests, his instruments were made by that company. Jim Bollman has seen about six 5 string plectrums. As he recalls, perhaps four were Tubaphone No. 9 models and two were Tubaphone No. 3 models.
This instrument is in fabulous original condition with a 11 7/8" inch rim and a 28" scale length. It's the early version with the pearl engraved gryphon on the peghead and fancy engraved dots on the board, all maple construction and a recent high quality skin head.