hmmm....does the type of dress actually determine what these blades would be called. True they seem to be edged on only one side which is not a usual keris feature, but everything else about the blades says keris to me. All the ricikan seem to be there. Separate gonjos. Asymetric base. So how can one call it a golok or badik?
As for age, it is really impossible to tell, but to my eyes the blades look older than the dress.