Thanks - much appreciated 🙂 it’s not possible to see the internal components of my key as the moulded case is still intact, but it does look like your second picture. My key has ‘MADE IN UK’, & ‘Ymos’ stamped on it.
How can one determine if an immobilizer is fitted? I need to replace a worn ignition switch on a Volvo S70 (built Aug 1997). Volvo spare parts have two switches available - one for cars with an immobilizer, and one for cars without.