antique white porcelain doorknobs lot, rusty hardware shabby worn vintage door knobs for upcycle or restoration

Lot of 24 old white porcelain door knobs (12 spindles, with the door knobs rusted on tight!). These are all used, worn, many in poor or very poor condition with crazing and staining, old paint, tons of rust to the metal, a few with chips. Project pieces, these aren't in usable condition for doorknobs as they are.