Introduced in 1915 the Neptune rowboat motor was Caille's inexpensive motor...it was not the later badge motor with the same name.
It was available with either battery or magneto ignition.

Caille Neptune was a straight blade prop (non shifting) version of the Caille Rowboat Motor. The "standard" Caille RBM was a 5-speed. 

As the Caille ads said, "A dandy, low-priced motor for general use."

There was also a canoe version, and a 3 1/2 hp commercial version which I have never seen.
They always had a dry exhaust.

Neptunes were sold
unpolished
as an economy move.

So if you have one
don't polish it!!!

Neptune

1915 Neptune

Great company letter concerning Neptunes.
This clearly documents the differences between the
Neptune line and Caille line on page two.

GREAT BROCHURE!

25-26 they were all painted this green color, aftet seemed as though some were also black or a verydark red. As Ja