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The ornamental design for a disc letter opener, as shown and described. |
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FIG. 1 is a front perspective view of a disc letter opener showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a back elevation thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevation thereof; and,
FIG. 7 is a right side elevation thereof.
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