Any tube experts out there?

Cleaning out and organizing my audio and camera closet I got all the way to the back where I founds something I had long forgotten I had...... bought maybe 15 or more years ago. A pair of Siemens and Halske 6922 CCa Grey Plates with round getter and the following codes.... 34.210 and 32.176. In the dark recesses of my memory I remember buying a few pairs of NOS of these 15 or 16 years ago... pins and writing on the tubes is immaculate, like brand new.
Anyone got an idea what date these are? I had gotten some real beauties from this guy back them.. 1958 Pinched Waist Valvos and other stuff you just didn’t see, even back then..