The HVR mark for Heinrich von Rehnen, already existing, should also list Dresden (1605-1624).
Source: SCWC 1601- 6th edition page 798.
The mark already lists Banská Štiavnica (1605-1624), but the HI mark is listed as Banská Štiavnica and Dresden both for 1625-1635.
The mark is already listed on Saxony coins.