Lot 5 vintage plug-in copper coils for early radio equipment

Lot of five vintage old radio coils with plug-in bases. They are copper wire coiled around bakelite (or other early plastic) cores and measure 2.25" long and 1" across They have 4 pin bases.

These are from the estate for an electrical engineer and shortwave radio buff, one of these (the middle one in the first photo) has a crack in the base of the core.

Item No. n731486