Two Wakizashi looking for info.

[Kmaddock]

Second Wakizashi
18.5 inch long in what I understand to be 1870's satsuma attire, simple wrapping on handle, iron mounts and basic tsuba, no scabbard.
The thing I am wondering about this is as follows.
What are the two disc things under the wrap and is this a hand forged blade. It is in rough enough condition so I am unable to make out any hamon
Cheers
Ken