Original oil and gas trade magazine vintage ad for HUGHES TOOL COMPANY in Houston, TX. OSC Picked for Outstanding Performance. More operators use OSC series bits than any other to drill soft, unconsolidated, broken and medium rock formations. Hundreds of designs were tested and studied in the developing the shape and length of the teeth, the proper ventilation of the heel teeth to shed formation faster, and the correct twisting, tearing action on bottom. This unique 1953 old oilfield petroleum industry magazine advertisement would display beautifully matted and framed. Nice graphics.