Here’s another card to add to the Ephemera backlog. 
It uses the same design as one I posted here 3 weeks ago and is marked “Artistic Series”, but it has no number so I don’t think you have a place to put it yet. I don’t see any similar unnumbered cards in the DB. It has the large cherub and easel trademark and measures 4-3/8"H x 3-1/8"W. I don’t see any artist’s signature.
@jrbuck99 Thanks again for the great scans, I’ve gone ahead and created a new set and item for this one:
@justintanner Fantastic! That worked out well. Too bad all the other unnumbered greeting cards don’t fit in so neatly. 