Great thread! I just want to share information from my friend.
She has two Constance 24; a black in epsom leather with rose gold hardware and a blue in evercolor leather with gold hardware. She purchased the blue Constance more than 5 years ago, it's in great condition but the H buckle is all scratched up. Majority of the hairline scratches came from her moving the center closure bar up and down when using one hand to close the bag and some bigger scratches from her accessories. When she got her black Constance about 2-3 years ago, she found this thread and purchased Orangeshields and Sabrina polishing cloth. She's on her 3rd set of Orangeshields; she removed the 1st set after reading the post from GlitterEyebags and found no discoloration, then she put on 2nd set of Orangeshields. 3 months ago, she accidentally dropped the black Constance faced down from her SUV car seat onto concrete floor, no damages on the gold hardware but the damage on epsom leather is not repairable.