I agree with Rick. Infact, i've seen quite a few of these older blades (late 19thC) in this particular type of dress which has come to be associated with cheap modern tourist blades. I don't usually like the term "tourist", but when we are talking about those cut out blades with painted on "pamor" that often are presented in this type of dress i think the term is appropriate. I think that when an older keris' sheath wears out and the blade comes up for sale the sellers in Bali tend to dress them quickly and cheaply in this readily available furniture. Sometimes, if you're lucky, you can find some really nice blades this way for very little money.
