[Hallicrafters] xtal question

[Nash4447 at cs.com]

Fellas

I am building a single tube 100kc xtal calibrator common to many mid 50s 
receivers. Nothing special about the circuit.

Not having a spare 100kc xtal, I looked in the Mouser catalogue and noticed 
that they sell one for about 50 cents !!!.  Now the 100kc xtals I am used to 
seeing are usually in metal HC6U holders and this is what I expected to get. 
When the Mouser xtal arrived, I couldn't believe it - the damned thing is about 
the size and shape of the rubber erasure on a lead pencil with two wire leads 
out the bottom.  The specs say it has a 12pf load capacitance which would be 
about right.

Does anyone know whether this tiny contraption will actually substitute for a 
100kc xtal like the kind in the above mentioned holder? The difference in 
size is what has me mystified.

Glenn K6PZT