Iron based and in a very good, unworn condition with all of the silver plate still present. Complete with all four prongs, backing plate and typical grey paper covering with four holes.
Not marked but a known variation that is commonly referred to as the missing log and has been classified as type 4.3.
Nice condition example.

Iron based and in a very good, probably unworn condition with most of the silver plate still present and some signs of storage. Complete with all four prongs, backing plate and typical grey covering paper with four holes.
Not marked but a known variation that is commonly referred to as the „Missing Log“. See GCA database, type 4.3.

Iron based and in a very good, unworn condition with practically all of the silver plate still present. Complete with all four prongs, magnetic backing plate with the typical dark grey paper covering with four holes.
Not marked but a known variation that is commonly referred to as the „Missing Log“. See GCA database, type 4.3.
Nice example.