What happened to the original casket?

[LincolnToddFan]

Considering that the original casket was said to have cost a king's ransom I can't imagine they would have just trashed it....or would they have? So many important historical artifacts have come up missing. It drives me crazy with frustration!

I find it astonishing that they would have actually removed they president's remains from his coffin. It was said to have mummified into the consistency of stone by then so I think it would have been a rather difficult thing to accomplish at that point.