Hi, I recently bought this Longines Watch and was wondering if anyone could give me some insight into what model it is, what year it was made and/or if it is authentic. The serial number is 25388120 I have attached some photo's to help Any help would be greatly appreciated. it is a quartz watch so I am assuming it is a 1980's watch but would love some more help Thanks View attachment 187386 View attachment 187387 View attachment 187388 View attachment 187389 View attachment 187391 View attachment 187392 View attachment 187393 View attachment 187394 View attachment 187395