Stag beetle, Rhinoceros beetle specimen front

Rhinoceros beetle and Giraffa stag beetle (Giraffa stag beetle is approximately 8 cm, Rhinoceros beetle is approximately 7 cm).
There are pre-existing scratches on the Rhinoceros beetle (please check photos 4 and 5).
These have been stored in the freezer for specimen preservation.
Would be great for anyone interested in specimen preparation.