Reproduction fountain pen cap jewels

You know the ones.  These are the harder ones to find.  The transitional cap jewels have a threaded shaft.   These are the 2nd generation version, with the domed top.  The three-ridge version was simply not feasible as a replacement part, but these will fit all the clips for any of the versions of the transitional J pen.

Note that pricing is for ONE single cap jewel, but I do have quantities to sell.