OC19 Germanium PNP transistor by Mullard. Package: TO-3 Download Mullard OC19 spec' sheet datasheet: Status: Very Rare NOS (New Old Stock) , never found on ebay, anywhere ! , no one has any for sale ...anywhere! Please note, some of these are very early and heavy, these have a thick 3mm thick flange with indent and a taller can than modern day TO-3's. Email to reseve, if you want this type for your collection. Individually tested components: YES RoHS compliant: no