Not sure how much interest there is in this particular instrument, but I'm throwing it out there.
This is a Soloette Little Thumper travel bass, made in late 2010. Similar to the Aria Sinsonido bass, but the Soloette's scale length is 27 inches.
Not exactly sure if these still in production, but here is a link with a full set of specs.
Little Thumper Bass SoloEtte Model Specifications
scale - 27"
one piece hard rock maple body
Volume and Tone control with headphone out that also can feed an amplifier
Frame is slightly curved to accommodate the "bass belly"
Sale includes the bass and the frame, the deluxe case with extra padding and crushed velvet interior, a fresh set of replacement strings ( LaBella CB40
) , a strap and a 1/4 to 1/8 inch headphone adapter.