[Harp-L] Unisound DM-520 Microphone

["geoff atkins" <geoffatkins@xxxxxxxxxxxxxx>]

Hi All
Does anyone have opinions / recommendations for Japanese Unisound Dynamic
200 ohm DM-520 stick microphones? 
I just found two at a fleamarket, unused, and in their original packaging.
The heads are small, mesh within a cast aluminum (or zinc alloy?) frame and
more easily cuppable than the Shure 520 GB.
They already have an on-off slide switch and  would appear to be a simple
matter to add a pot near the end of the stick, any suggestions for rating
assuming the 200 ohms is accurate??

Thanks

Geoff Atkins