Model 310
Amplifier Type
2 channel Solid-State
Output Power
200 watts
Drum
0 - Simulated Rotor
Horn
1 - Compression Driver
Speeds
2

Having never seen one, the information above, the photo, and the review below come from Paul Strange of the UK.  Few if any were sold in the USA.

"This model - a portable and powerful Nihon-Hammond solid-state Leslie using a slightly modified 122 horn and simulated bass rotor - was introduced in the UK in the early 70's, probably for the B200/B400 series. [Nihon-Hammond was a collaboration between Hammond and Japan that produced several Organs and Leslies in the 1970's -- T. Thompson]

Weighing 50 kg, it's a compact design (605 mm  wide x 460 mm deep x 668 mm high) with two channels (rotary and stationary) and has three inputs - an 11-pin interface (for XB/XK series organs) and two 1/4" input jacks for use with other instruments. Four separate amplifiers power its four speaker sections. The rotary channel - via the 11-pin or a 1/4 in jack - is fed through the top rotor and BBD modulator/15 in woofer. The straight channel - 1/4 in jack only - is fed through the 15 in woofer and two additional horn tweeters. The 310 - now quite rare in the UK - makes a useful match for the Hammond XB2 and XK2. A very portable package, it can sound a bit strident, so for jazz and blues use a mellow setting; for rock, increase the treble slightly and remove the front louver panel."

                                                                                                                                                                                                                                                                                                           

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