First Things First
Mint stamps sometimes have hinge remnants on them. They can be easily removed. Some early hinges are very stubborn and can't be removed, but the majority of hinges can. First you will need a nice quality artist's brush. Turn the stamp over, gum side up. With a small amount of saliva, wet the brush and keep "painting" over and over the hinge on the back of the stamp. Do not over wet the hinge, be patient. You use saliva over water because you can control the amount of saliva and not the amount of water. Eventually, you will see the hinge start to buckle in some places. Carefully using tongs start pulling up the hinge from the stamp. If the hinge sticks, stop pulling with the tongs at once and apply more brush strokes to the hinge where the tongs stuck. Wait a few more seconds and slowly remove the hinge. Take a piece of clear pliable plastic and place to the side. After the hinge is removed, grasp it with your tongs and hold it in front of your mouth. Breath on the stamp with your hot breath. Say the word Hah! the same way you would if you were about to clean your eyeglasses. Take the plastic and cover the spot where the hinge was. Take the back of your tongs near the top and rub it back and forth over the area where the hinge was, but covered by the plastic. Wiggle the plastic back and forth until it comes easily away from the stamp. If you notice the gum will have a lightly hinged appearance instead of an unsightly hinge remnant.
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AND: (THIS ONE IS DANGEROUS-CAREFULL !
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Unfortunately we collectors sometimes find someone has made a notation on the gum side of an unused stamp. When you take a conventional pink eraser and attempt to remove the pencil marking, you take some of the gum away leaving a small area of disturbed gum on the stamp. There is a way to alleviate this.
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Buy a vinyl eraser in an art supply store. They are white in color and cost about a dollar. With the white eraser, you can safely remove pencil marks from the stamp without disturbing the gum. First lay the stamp face down. Take a piece of clear pliable plastic and hold down with your finger the plastic over he area you are not working on. This will hold the stamp in place. Gently erase with the eraser the pencil mark. It is very important that you erase in one direction only. Erase toward the perfs of the stamp and away from you. Eventually, the pencil mark will disappear unless it is a deep ground in pencil mark. It is very important you erase in one direction only or you will have two pieces of one stamp!
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