Here's a cool dry process porcelain aerial fuse antenna insulator made by Electro Ceramica (incuse marked EC). Also marked 60A most likely because it protects up to 60 Amps. This example found in Spain. 1 teeny flake and 1 tic mark. Company stopped making porcelain insulators in 2012 after 77 years. Factory cracking seen is typical on dry process insulators and not damage.

First email gets this cool porcelain antenna strain fuse insulator for only $20 plus shipping. Combine with others to save on shipping. Thanks!