Cleaning out the old workshop spare parts and take a gander at these!
Originating from the old days of crystal locked radio equipment, pretty sure a couple of these were extracted from Citizen Band HF transceivers and the Hy-Q's look to be from some old HF Philips commercial gear
VARIOUS MANUFACTURERS - Quartz Crystals
All are HC25 packages
All have pins for socket use - not hard wired
1: Hy-Q 44692.5 MHz
2: Hy-Q 9835.62 MHz
3: Unknown 27.065 MHz
4: KOYO 27.910 MHz
Each crystal is now individually packed into a sealed, clear plastic packet.
USED
Exactly as described