Points for 66 273 dual point

Should be. I'm partial to Echelin points. That part number is Echelin's for the dual point Prestolite distributor.

FWIW: I've had trouble in the past with Standard brand ignition parts. (Some times it can't be helped. I use what's available.) Usually it's the rubbing block that has come off.

Agreed. The Standards were always cheaper. We had Filko 40 years ago that was good stuff.