Have a g-62 with a C&H ignitions setup no mechanical advance linkage,is there a way to confirm if the ignition module has the built in syncro spark feature?

If it doesn't snap your fingers when you try to start it - the ignition has the auto advance.

Mine has the CH using the Zenoah coil and the auto advance.

If every thing is orginal, it should say Syncro Spark on the back of the moduel. Maybe just engraved SS