[Elecraft] [K2] unlabeled (IF?) coils?

[Curt]

When I built my K2 several years ago, there were several tunable coils left over (?!).  The
coils used for the build had labeling and stripes per the build instructions.  BTW, the K2 works FB.

The leftovers are 10mm on each side, with grey slug, the only label anywhere is "coils" printed 
twice on top.  Bottom has three pins on one side, two on the other.  There is a number "46"  stamped
into the plastic ibetween the pins.

Would anyone be able to help better identify these coils?  I have a homebrew project in need of 
some transformers.

73, Curt KB5JO