This is a pewter reproduction of a brass thimble on display in the museum at the Jamestown (VA) Visitors Center. It was made in the United States and has been antiqued to more closely resemble the original. It is available for $8.95, plus S/H, from eParks.com, which is the online store for the National Parks Service. This is the only thimble they have available right now.
There is a little blurb about Jamestown thimbles excerpted from William M. Kelso and Beverly Straube's Jamestown Rediscovery 1994-2004, online at HistoricJamestowne.org. There is a picture of a thimble, but not the one pictured here. Actually, the way they have the picture presented is a little funky. Little picture with this magnifying glass icon you can click on that will enlarge whatever part of the thimble you move the icon over, but it won't enlarge the whole picture. An enlarged image of that picture is on the Association for the Preservation of Virginia Antiquities (APVA) Jamestown Rediscovery website.
Apparently the excavation of Jamestown has also unearthed a Silver Ear Picker. Sometimes I wonder how long I'll be able to find a new little tidbit about thimbles to post (mostly) every day. Someone else will have to take on the Ear Picker blog.