Key blank, K300 series locks for ignition and door, Fits 356B/C, from chassis: Coupe 117601, Cabrio/Hardtop 155601, Roadster 89601, Karmann Hardtop 201601.

Notes:
The key code number is etched on the side of your ignition switch. It will be this: K-1xx for the blank key, 644 613 901 10. Original keys will be stamped: K-1xx. If you have only an aftermarket key, then it will have a groove on the back (the side without the manufacturer's logo) of the key, biased toward the "top".