The top three items (small open center heart shaped brass loops, with two attachment rivets), are from Victorian era corsets. These were fastened to a long thin steel strap, called the busk, that was inside the corset on one side. The other side of the corset had a nearly identical steel strap, with small brass pin studs, that hooked inside the loops we see here. Since the thin steel usually rusts completely into pieces, the small brass loops are frequently found scattered separately. Under ideal conditions where steel and iron is better preserved, I have actually found the complete corset busk straps.