The driver has been mounted, it's obvious by the top shot of the surround / basket, and is really really full of dust, on the spider etc.
3HPLM is nomenclature for 3HP motor, LM = Linear motor variant. That would mean it's a 3 inch coil and the motor is made for a linear wound coil. ( predecessor to the LMS )
If the gap is clean, and the coil is centered, you should be ok. It looks like there are a few marks on the cone as well.
More or less a variation of our TC3HP ceramic motor with an extra magnet for a tad more BL, but more importantly, mechanical clearance and tolerance for an even larger shorting ring. This motor was designed with our linear coils in mind which tend to have huge strokes that require extra clearance. The magnet structure weights nearly 300 ounces and sports a 0.5" think gap plate. The gap plate also comes with a special threaded adaptor to allow fast and easy removal of the top assembly in the event of damage. The motor can be detached form the frame in a matter of only seconds.
"You take the blue pill - the story ends, you wake up in your bed and believe whatever you want to believe. You take the red pill - you stay in Wonderland and I show you how deep the rabbit-hole goes."