Good vintage outboard ignition switch manufactured by Chicago Lock for Outboard Marine Corporation aka Johnson / Evinrude outboards.  This type was used from the 1950's into the 70's until it was replaced with a similar lock using the "pistol grip" key type. Lock shown is out of a 1972 control box complete with a #KF53 key.  The switch itself is actually compatible with most any make or model of outboard using a "ground to kill" shutoff mechanism - either breaker point or electronic powerpack but this item is aimed at the classic enthusiast or collector. Priced to move and shipping's reasonable via tracked Priority Mail. Thanks for looking.