100% Silk Button Hole Thread - Gutermann - B. Black & Sons Fabrics

100% Silk Button Hole Thread - 1 spool = 437 yards - Made by Gutermann Germany

100% Silk Button Hole Thread - Gutermann

Silk Thread - The Lining Company

The Hand Sewn Buttonhole Thread, Page 15

GÜTERMANN 12 pc Sew-All 100m Thread Set - Neutral Colours – Fabricville

Gutermann Silk Twist Thread 30m Multiple Colors

Gutermann Silk Buttonhole Thread - Tex 75 - 437 yds. - WAWAK Sewing Supplies

Silk Buttonhole Twist Thread

100% Cotton Thread - B. Black & Sons Fabrics

Gutermann Sew-All Polyester Black Thread, 547 yd.

100% Cotton Thread - B. Black & Sons Fabrics