The best I can do most of the time is assume that if a pattern is published in a catalog that is it's date of release.There are of course crossovers and some patterns are rereleased.Their manufacture stopped after World War II and due to their short production span they are harder to find and considered highly collectible.
Their head shot and a personalized design and artist rendering was there for the world to see.
This type of publicity during the Great Depression entered more homes than magazines and newspapers.
The pattern number is only an indicator of the date on vintage sewing patterns.
A starlette knew they had arrived when they were featured on a Hollywood Pattern Cover.
There is more difference between 19 that there is between 19.
Besides the general look and art work of vintage patterns, the sizing can be a very good indicator.The pattern number is only ONE indicator of the date on vintage sewing patterns.You can’t use the number alone because the companies would start over again when they got to a certain level.(there are too many to list here, but you can find them on my Links Page,) and last but definitely not least, my Dear Husband for giving me tons of help and encouragement to research all of the data to compile for your research benefit.Not all of the major companies dated their vintage sewing patterns in the same way.Here is a partial list of some of the Stars and wanna be stars. If you have a Hollywood featuring a star not on the list please feel free to send me the information.