Sur Beta 87 & SM87 differences ? Schematic needed.....

Just a quick one has anyone got the SM87 old or new & a Beta 87 ?......Are there any differences apart from looks....and handle sizes of older & new......I no theres also a cardoid verson of the beta...

I see the brown SM87 is back on sale now a few pounds less than the beta.....also anyone compared the SM86 cardiod to the beta SM 87s?

Would love to get a schematic also....I look over the wenb for this info but no joy...

Thanks for reading.

Shure never gave out a schematic for the electronics of their condenser mics. You had to buy the complete PCB if a fault developed.
Can't help re differences either!

Thats for yr thoughts Walrus......

Someone must have SM87 iv never seen a second hand one so they must be useful