Vintage Cut Crystal Salt & Pepper Shakers

Great vintage condition. No chips or cracks. There is some residue inside one of the shakers, see close ups. I did soak in soap and water and then scrubbed with a tiny bottle brush but was unable to remove it all. I have allergies to harsher cleaning agents so I only tried warm water and soap. Please look at all pics and zoom in for a closer view. Measurements in pics. No rust in the lids. Vintage Cut Crystal Salt & Pepper Shakers US