It depends on what sound you're looking for but, if they work, why not? They look to be 60's or 70's Japan made dynamics. They're only $10 with a nice box, instructions etc.. maybe new old stock? Sure, I'd buy 'em, just to have a different sound palette on hand. Plus, they don't make 'em like they used to. The one in the photo looks like the cable is detachable? That's a sign, IMO, that it's not a typical consumer microphone but rather a higher quality one. I'd buy em out if they work and are in nice condition.