sewing Machine Attachments. looks like Singer 27 puzzle box items. one foot is missing a set screw? faceplate screw fits but doesn't look right to me. tuck marker foot looks incomplete/broken? swipe
Antique 1906 Singer Sewing Machine Model 27 and 50 similar items
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Singer Model 27 Sewing Machine Attachments
Singer Model 27 and 127 - Wikipedia
The Copycat Collector: COLLECTION #190: Vintage Singer Puzzle Box