Silver Orb - Ball Salt + Pepper Shakers Need Help to ID Hallmarks Danish ?

Good Afternoon, I'm looking for some help with these salt + pepper shakers. They feature two hallmarks, the first looks like JL with a crown over top and the second is a pair of crossed keys. I get the impression they are silver plated and possibly Danish or Scandinavian, maybe mid century. They have an Art Deco feel to them. It looks like they have white ceramic on the interior, possibly porcelain. They measure 2" x 2". Sorry about the photos, these were really hard to photograph. Thanks for your help!