On a parallel 'track' to recent postings about FT243 crystals I ask:

is the shape/pinning/authenticity the focus of interest OR the merely the ability to generate a stable, known (and even synthesized/variable) frequency?  What if the 'crystal' was in a box, say 2x2x1 inches?

Yes, this forum has a specific focus - ARC-5 sets, but many here are 'ham' operators.  So I'm asking the question to a wider audience than those with ARC-5 interest.

Leslie