Here's an unlisted (on NIA website) and uncommon Peak Top CD 427 from Portugal. Embossed RG (front) and CTT VA 3-1 (reverse) This telephone insulator was made by Richard Gallo. These are a lot tougher to find than the SB embossed.

Attractive Ice Green. 1 tiny tic mark otherwise excellent condition! No chips or cracks.

First email gets this rarely offered insulator for only $50 plus shipping. Thanks