Hamburg "H" with silversmith "D.M.D."

[srvrip1]

Hi,
Need help with the following: Hamburg marking with "H" in the gate. Silversmith markings are "D.M.D.". Any help identifying dates and possible maker would be appreciated.
Thanx

[Bahner]

Hello, neither Scheffler nor Schliemann document a Hamburg maker with those initials. Maybe a misreading ? A pic might help.... Best wishes, Bahner