They don't look like randonneur bars to me. Randonneur bars have some degree of upslope from the center section and some flair. Both the Nitto randonneur bars I've had (B135 and B132) were marked with the model number on the end of the bar (under wrap) as well as the sleeve. The drops of Nitto randonneur bars are much more parallel to the tops than the ones on your bike.
I suspect that the model number is stamped on your bars and that they're Olympiades (B115) or something like that.
