This is a Shure Beta 52a dynamic mic. In excellent condition. These sound awesome on kicks. Great punch and low end. They also sound great on bass rigs. I somehow ended up with three, so one needs to go.
From the internet:
About: How low can you go? With the Beta 52A, it's pretty darn low. This microphone specially designed for all kinds of bass, from kick drums to bass guitars. The Beta 52A will make your bass BOOM instead of getting lost in a swampy thud. The frequency response is 20Hz to 10kHz, and the mic is built to withstand the daily abuse of road work. Its supercardioid pattern aids isolation and it can handle up to 174dB SPL. For big bass sounds on stage or in the studio, it's the Beta 52A.