Unusual rubber stamp
While this light bulb has a vintage or steampunk feel to it, it also reads as a light bulb in a modern context. The lines are good and clean. The rubber is fairly deeply etched. The cling foam is trimmed close to the image. In all it is a quality stamp.
With little effort you can make it appear to be on with colored pencils, a pastel marker, and Pan Pastels. This is an unusual image for mainstream rubber stamping which is part of the reason why I love it.