Odd D-104 Sighting

[Holydvr]

Opened this element (beyond dead) to convert it to Ceramic with an MC-564 ceramic bar, but found this skinny “yoke” as I call them that attaches to the crystal packet. Seems this one may have had (or not) thr skinnier packet out of say an MC-151 or similar. I myself have never seen this. Original packet was grenaded, but seems to support my theory with what little is left. This element has the earlier thicker diaphragm. It was very much untouched as far as my eyes told me. What little wrinkling that can be seen is from me breaking the fossilized glue holding the diaphragm onto the puck.

 

[nomadradio]

Looks to me like the ceramic piezo element is mostly gone. Only a tiny remnant is visible. The "yoke" is meant to twist the element as the diaphragm pulls it back and forth.

Does this one say "MC321" on the rear?

73

 

[Holydvr]

The element is unmarked. Doesnt even look as if it ever had a sticker on the back. I have another that is still in the original head from late 1946 and it was similarly unmarked. I forget now how I was able to date that one at least somewhat. The destroyed crystal packet was not of the standard larger square variety some of us are used to seeing. The yoke is also about half the width as usual. Just an odd duck I suppose, as I have never seen one like this.