This scarf is unmarked but I'm willing to go out on a limb and say this is an Italian designed and manufactured. Whenever I find one of these brilliantly colored and excellently designed acetates it will usually have a made in Italy tag.
The scarf is 27 inches square and in unused condition. The pattern is a series of white drawn cubes some of which are filled in with shades of yellow, orange and brown. The background is a medium blue.