This is a new plunger style Cada Molds bath bomb mold.
For examples of the bath bombs this mold creates please see cadamolds.com. If you need any help with this style mold they have a wonderful facebook help group as well.
This bath bomb mold has a big learning curve. Check out Cada Molds FB help group for videos.
3" bottom to top
2.25" from ear to ear
3" nose to back