Nice metal with porcelain coating Hi voltage sign. These were used on the crossing signals power supply lines that ran along side of the signal lines. Sign is old, possibly 40's up to the 60's and has some light ageing and wear but overall is a lot better than most when it comes to porcelain missing and rust. Put a coat of polyurethane on this and it'll be ready for another 20 years on your yard pole. $10 + shipping.