Lidded Jewelry / Trinket Box with a Picture Composed of Tiny x's / Theorems or Fraktur ?

I took this box that has been in my family for as long as I can remember to the Antique Roadshow MANY years ago and was told that it was very valuable because it is Theorems 1920s. The picture is on paper and is composed of tiny x's. I have never been able to find any information about this item based on what I was told at the Antique Roadshow. I recently stumbled on some other possibilities of information when I did a search under "Folk Art" ~ The words Fraktur and Taufschein brought up pictures that resembled my picture to some degree and were called,  Pennsylvania German and Pennsylvania Dutch. I am wondering if what I have might indeed be such an item. Any Help Would Be MUCH Appreciated...

Category: Folk Art

Condition: Very Good

Medium / Material: Wood Box / Picture is some sort of Parchment-type paper

Distinguishing marks: Bottom Left Corner of Picture ~ (has a circle with a "c" and the         following letters) "B.P.F.W."

Period: 1920's or Earier ?

Dimensions: Box 2-3/4"T x 10-1/4" x 8-1/8"

History:Has been in my family for over 80 years that I know of.

For Sale: Not at this time