In my collection I have a high grade example of an S231 remainder, a 1 Bolivano note from 1894 and the Banco Potosi, Bolivia.

My query is that SCWPM-Specialist Issues says 'A hoard of uncirculated remainders of #S231 was located during 1984' and I expect that my note came from this hoard. A few auction listings mention this but nothing else.
As it seems this was before the digital age it would be great if anyone has information on this hoard they are able to share.
Many thanks