This is embossing index [140], with what appears to be letter "L". The color appears to me to be light lavender, somewhat reminding me of an SCA Whitall Tatum. This one has great color and brilliance, but does have some damage. In this photo you can see the base chip. It is mostly confined to the inside of the base, although you can see it from the front. There are 3 more pictures of this insulator for further review. This is a great place holder, and I am about giving it away at a price of $30 plus actual shipping.