Toning V Staining

Now I'm curious to see what a selenium stamp would look like. Maybe I'll experiment sometime.
Tom

Toning is usually due to acidity in the paper and/or interaction with light. Toning affects the paper and may affect gum and ink. Borders of toning, when not overall, tend to be straight lines. Exposure to environmental factors in gaseous form are sometimes labeled as toning. Changes in color due to exposure to a high sulfur atmosphere is a common example.

Stains are the result of contact with foreign substances in liquid or in solid form. Water stains, coffee stains, rust stains. Stains usually have irregular edges or the shape of an object like a paper clip or staple.

Bill Lehr
General Secretary, Internet Philatelic Dealers Association

Regumming done well has absolutely no impact on the paper fibers at the perforations. Not so well done regumming leaves gum residue in the perfs which is typically removed by sanding. It is the sanding that removes the fibers. Well done regumming does not require sanding so the presence of fibers is not a guarantee that regumming did not occur.

Tropical staining, also known as foxing, is a fungal growth on the gum and/or into the paper. These so called stains are generally circular. Small bleached spots are an indication that foxing has been treated.

Unfortunately, many sellers seem to think that using toned to describe any of the above defects, except for regumming, makes the fault less undesirable.

"Unfortunately, many sellers seem to think that using toned to describe any of the above defects, except for regumming, makes the fault less undesirable".

Jobi01, That's what I was thinking. It seems to be a term thrown around too loosely.