Sweet blue and pink pastel holiday card allows a photo to be inserted inside card which is displayed on the front via a cut out, see photos.
Unused, paper is yellowed from age.
Width: 4 1/2"
Height: 6 1/2"
Personette patent applied for by FREDERICK KIRCHOF, New York , N. Y. Filed April 15 , 1931. Serial No. 313,373
https://www.ancestry.com/1940-census/usa/New-York/Fred-Kirchhof_c64xw
Other patents - Fred Kirchof:
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3399825
https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3352481
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