MSA 82769 Comfo-Cap Safety Hard Hat with Staz-on Pinlock Suspension | Polycarbonate Shell, Non-Slotted W/ Lamp Bracket and Cord Holder - Standard Size in Black: Amazon.com: Industrial & Scientific
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Antique MSA Low Vein Mining Hat - Etsy
MSA Comfo-Cap Mining Hard Hat w/ Staz-On Suspension