I collect Cinderellas from 1930 to 1939 that are related to philatelic events or to one of the many stamp clubs and organizations that existed during that period.
Generally, most stamp club Cinderellas show their date, as in this example from the Mahoning Valley Stamp Club in 1936.

I came across this single from the Mahoning Valley Stamp Club but it doesn't show the year.

I've looked at the Fields-Picklo catalog but it was not listed. Does anyone know the year this label was issued??