I have posted this information to my PhotoBucket Album. Link provided in previous post.
IDEALE 'KM' Saddle variations: 1) One has the rear Ideale metal badge, the other none. 2) One has removable rails, the other is fixed. 3) Saddle profiles are different. 4) One has cut away nose, the other is slightly rolled over. 5) One is embossed '???' on the top rear, the other is unmarked.
Both have Ideale branded rivets.
Photos and infomation were provided by Belgian eBay seller: zairebunia. He sold these several years ago and does not have a record of measurements...sorry. They were found in a group of Ideale saddles including Model 43's. 43's came with removable rails. The 'KM' with removable rails mimics the style of the '43' that I own with only subtle variation.
Jay Dubiel
Halifax, VA USA