Hi,
I finally got round to testing and sorting this oscillator. It does work (which is always a worry for second hand stuff from a radio rally).
At 9.0 Volts it draws between 3 mA and 8 mA on the pin diagonally opposite the ground pin. The output is a sinewave, centred on ground, with an amplitude of 2.9 Volts peak-to-peak when loaded only with the 'scope and 1.8 Volts peak-to-peak when loaded with 50 Ohms.
The pin-out, viewed from above (like normal chips are):
+------------------------+
| 4 = Ground ... Out = 3 |
| 1 = N/C .. 9 Volts = 2 |
+------------------------+
Strangely my bench PSU seemed unable to deliver a solid supply, loads of ripple - 840 mVolts! Even with a 47 nF polyester & a 470 pF polystyrene right across the pins the ripple only got down to 530 mVolts. Ah well, the output looked like a clean sinewave no matter what.
Cheers, Brian.