Does anyone know which collector is behind DWBG Collection?

Hello everyone,

I am the new and happy owner of CNG auction 595 lot 291 [ MOESIA INFERIOR, Marcianopolis. Macrinus, with Diadumenian as Caesar. ]





I am currently adding it to my collection database and would like to know if a well-informed collector can tell me more about DWBG Collection, from which CNG indicate it originates.

I have of course contacted CNG, but have received no response so far.

Thank you all in advance

François
HerMer coll.