CCAHA

    • Inpainting 1
  • 264 South 23rd Street  
  • Philadelphia, PA 19103
  • 
P 215.545.0613
  • 
F 215.735.9313

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19th-Century Parchment Certificate

    • 19th-Century Parchment, Before Treatment
    • 19th-Century Parchment, Before Treatment

The parchment arrived in generally fair condition, although it had planer distortion overall. There was a gold paper seal (2½” diameter) in the bottom left corner. There were 10 holes around the perimeter of the document from rivets that previously held a sheet of clear acetate over the face of the document. The edges of the document were partially detached from the paperboard. The bottom edge was cockled. There were three vertical and one horizontal creases suggesting the parchment was previously folded into multiple sections.

There was ingrained surface dirt along these creases and in the minor creases in the upper left corner. There was minor to medium surface soil overall and there was black smudging around the edges. There were flyspecks in the upper left corner. There were yellow adhesive residues along the top edge and a 1½” long tear in the top right edge. 

    • 19th-Century Parchment, After Treatment
    • 19th-Century Parchment, After Treatment

During treatment, friable inks were consolidated with dilute gelatin and a fine brush.

The cloth of the portfolio was removed and the backing board was mechanically reduced using a spatula and a scalpel blade.
 
The parchment was selectively surface cleaned with solid white vinyl eraser, natural rubber sponge, and a brush.
 
The flyspecks were mechanically reduced using a scalpel blade.
 
The parchment was relaxed using dampened Gore-tex. Planar distortion was reduced by drying under restraint using the suction table.
 
Tears were repaired with mulberry paper and dilute gelatin.
 
The parchment was flattened between blotters and was pressed under moderate weight to the degree possible.
 
Mulberry paper perimeter hinges were attached using a mixture of polyvinyl acetate and methyl cellulose.