München, BSB, Clm 3860a
From Clavis Canonum
München, Bayerische Staatsbibliothek, Clm 3860a is a copy of the Collectio Dionysio-Hadriana. Maassen mentions it several times: https://archive.org/details/maassen-1870-geschichte/page/751/mode/1up?q=3860a
The manuscript is digitized from a b/w microfilm: http://mdz-nbn-resolving.de/urn:nbn:de:bvb:12-bsb00106184-8