Thank you Charlie for the info. I have not seen one with true inlays on menuki, but of course I am just a novice. The Tiger menuki I like the best is from Iwamoto :
https://collections.mfa.org/objects/9808/pair-of-menuki-in-the-form-of-tigers?ctx=670ac707-7750-44fc-871e-06f418d308b9&idx=8
It is very detailed, even the furs on ears are carved. the size is only 3.3 cm