The Lightning stamp affixer was an office aid used with coil stamps to affix stamps one at a time. See illustration from Stan Kundin's recent book on Coils published by the RPSNZ.

These are the demonstration stamps used in coils by the sales reps.

FOUR different stamps here - even a single is seldom seen. 2 are UHM (one has a couple of toned perfs), the other 2 are MNG.

Interesting cinderellas with a good local connection.