Much better pictures and nice & interesting barong. Have had once a similar problem, look here:
http://www.vikingsword.com/vb/showth...light=kampilan
I have attached 20 centavo silver coins but can't tell you the diameter for the moment since the kampilan is in other hands for a blade polish and etch. You can do a little bit google search to find out the diameter from this coins. Otherwise you can use also silver disks in the adequate diameter. I would give back the handle his "eyes", it will win beauty by this.
Regards,
Detlef