551 120 B20 Large pencil eraser
Year: 1983

B20 Large pencil eraser

Eraser for pencil on all drawing surfaces.

"B" Series erasers remove pencil lines from all
quality drawing surfaces by a non-abrasive action.
They will not damage the surface or diminish a
line drawn in ink and are therefore ideal
for the draughtsman and artist.

Numbering seem to be not from the size of the eraser but quantity in box.
So B20 is large and offered in 20 piece box, and B30 small and offered in 30 piece box.

551 120 B20 Large pencil eraser
551 130 B30 Small pencil eraser

B type of erasers go way back to 1977. but this particular item is from after 1983.

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