I don't know a lot about cut paper silhouettes, but I do believe these are likely not too much older than the pocket frame, which based on some research I believe dates to the 1860s or so. The relative simplicity of the silhouettes makes me think that it might have been done by a schoolgirl or the young woman herself rather than a silhouette artist, who might have included greater detail. And curious, at least to me, that there be a positive and negative of the same silhouette, framed side by side, which is what makes me really love it, suggesting two contrasting sides of one psyche!
Embossed leather pocket frame measures 3 3/4" x 3 1/4" when closed; 6 5/8" x 3 3/4" open. The white silhouette is adhered directly to the purple fabric on the left side; the black silhouette is under glass. Overall good antique condition, with some light age toning/spotting and overall wear. Brass hook closes securely.