Beyerdynamic M160 looks like dynamic but ribbon?

Despite the fact that this microphone looks like a ordinary microphone with a dynamic construction, this is an unique double ribbon microphone with hypercardioid polar pattern. Usually ribbons are bidirectional meaning that they pick up sound equally well from both either side of the microphone. However, the M160 is worth mentioning. Works on acoustic string instruments, amplifiers, drum overheads and is brighter than most ribbon mics.

Beyerdynamic M160 with a hypercardiod pattern.

The standard pickup pattern of a bidirectional microphone (red dot) viewed from the side above.