A brand new, unused Lyman 58 calibre Minie mould in original wrapping/protective grease etc., complete with the necessary plug.
Casts a nominal .575 in. 530 gr. head.
This has sat in my cupboard for several years in good storage conditions.
It will need some suitable handles (Lyman large), but if you've read this far, you'll likely know how to deal with that!