I am not sure where this sign originated. If anyone has any knowledge of these please let me know. It is marked with a TM so I believe it was approved by the estate and was perhaps used in a Marilyn Monroe line of merchandise.
UPDATE - thanks to a recent comment I realized I never came back to this post and updated that I did find out where these neon signs came from. Looks like I only posted about it on MarilynGeek on facebook page. These were used by MAC cosemtics for there Marilyn Monroe line of cosmetics. Here is another photo of mine and a photo of a MAC store.