Yuppers... Whites tells me it's a Prism III.... I'll quote what they told me:
The Coimaster shares all of the features of the Prizm III without a locking collar on the upper rod, no arm strap and an un-printed box. Basicaly it's a prizm III. Quiet no fuss detector @ 8kHz.
Now... tell me what an 8kHz detector can do....