Crown 2nd Model was developed in 1944. The developed design was unique, taugh, and smooth. This bottom style superseded early style around 1957-58. And this Interlocking(Automatic Lock) slider also superseded Spring pinlocking slider in 1952.
Dead stock from 1957-58!!

Manufacturer: Coats & Clark Corp.-Crown Fastener Div.
Year of Manufacture: 1957-58

Zip Type:
• Separating

Zip Teeth:
• Width: 9.2mm, #10
• Material: Die Cast Zinc mainly

Zip Tape:
• Width:19mm
• Color: Sage Green
• Material: Cotton 100%

Zip Slider:
• Interlocking(Automatic Lock)

Zip Retainer/End Box:
• Die Cast

Zip Length:78cm

Various Purposes for Repair:
• MA-1, N-2B, N-3B....