Briggser look up CJ"S METAL DETECTING PAGES has a lot of info for your finds check it out . vanzutphen The thimble is a beehive. cjs has a title called artefacts by type medart2 and go to [ web links] lots info here and click on and then click on artifacts by type this will take you to the other 2 titles before scroll all the way to the bottom and you will see harness decoration and there are some close relics like yours.
1st picture is a medieval plate buckle, 2nd is a door hanger handle (part of) 3rd is part of a belt fitment I think?, 4th is a medieval beehive thimble, nice one that.