This promotional ink-blotter extols the virtues of the Mazda "Drawn Wire" electric lamps (or to us bulbs) available at the time.

The blotter is two-layer, white printed card on the top and pink blotter underneath.  I do not know if this was a Mazda series, a technology series, or Frost & Son general promotional series.  By the large serial number one assumes that there were quite a few variations of these blotters.  Notice the pip-top glass envelope and multi-filament lamp typical of this era.  This example has (thankfully) never been used.

The lower quarter had an area for customisation.  This particular one is stamped in black ink with;