Slim Kojuk Mrenges Keris Hilt from Madura

[COYOTE]

I recently bought a Kojuk Mrenges keris hilt, made in Madura Island and believed to be very old elephant ivory. I am very curious about his size. As far as I understand, there are basically 2 types of these Kojuk Mrenges keris hilts : one being much slimmer than the other. But the present one is even slimmer than the slim model.
Please have a look on the pictures figuring a "normal slim" model of Kojuk Mrenges and an other "much slimmer".
The measures of the 2 pieces are :
The "normal slim" one :
length 9.5 cm,
thickness of the piece without considering the base : 2.1 cm
measures of the base : 2.4x2.4 cm
The "much slimmer" one :
length 8.9 cm,
thickness of the piece without considering the base : 1.4 cm
measures of the base : 2.0x1.7 cm
So, as can be seen, there is a quite important difference on the thickness of the 2 pieces, 2.1 cm against 1.4 cm.
Would it be possible that this keris hilt was made for a woman or for a child ?
Otherwise, would it have an other explanation ?
Thanks in advance in helping me to learn from the experts ...
Best Wishes from Rio