[Test-Equipment] Blackhawk Xtal Filters

[Tom NØJMY - AAR7FV]

I recently gutted a piece of Siemens telephone test-equipment, a Pegelmusser 
or something, and it had a couple of crystal bandpass filters in it.

They were made by Blackhawk Engineering Company of Janesville, Wisconsin. 
The model numbers are SS-14485-1B and SS-14486-1B.  They're roughly 2 1/2" 
long x 1 1/8" wide x 1 5/8" tall.

Can anyone out there decipher these numbers for me?  Or shed any other light 
on what the spec's would be?

Thanks,
Tom