This lot of MOP buttons came to me several years ago in a lot so large it required a two wheeler to haul it to the car. This listing is for approximately 10.8 pounds of mostly mother of pearl buttons ranging in size from teeny tiny for baby or doll clothes up to about 1 inch in diameter. Jar measures about 6 inches square and 8 inches tall.
There are plain, two hole, four hole, carved, dyed, naturally dark shells, sew through type and self shank as well as metal shank and 'whistle' styles.
Some may be other materials, some may have been over-washed in harsh detergents that takes away some of the shine, some may be seconds. The other part of this purchase had lots of different shapes in a number of sizes but I see a few in this lot as well.
I saw at least one porcelain that is probably a shoe button. This is part of a huge collection that I purchased a long time ago and then tucked it away and forgot about it! I had intended to go through these and pull out the seconds and unshiny over-laundered ones, but I never got around to it so I'm going to let it go as is.
These are in the jar in which I purchased them and they are almost up to the bottom of the lid in this jar. There are some that had off-centered holes, some are over-laundered, some are probably damaged - not all but mostly mother of pearl. No telling what all else is in this jar. You can see that the larger ones seem to be spread deep and wide in the jar. The whole package weighs in at about 13.4 pounds long before packaging for shipment. All measurements are approximate.