In this era, subjects of photographs typically were asked not to smile, since the speed of film then was slow, and a wavering smile would likely result in a blurred photograph.

References:

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1890s • Cabinet card
Three women and one man sitting at a small table with a dark cloth, playing tiddledywinks.
Photographed by D. Cramer, Vance Street, Carey, Ohio
Source: Tucker Tiddlywinks Collection
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1890s • Cabinet card
Three women playing tiddledy winks at a small table plus two standing
Photographed by Hyatt & Tooke of Cortland N.Y.
Source: Tucker Tiddlywinks Collection, id DSC07632
[+template:(Tucker Tw ID • [+xmp:title+] — publisher • [+iptc:source+] — title • [+xmp:headline])+]
1893 Cabinet Card
Two men and a woman playing tiddledy winks with a gas light on a small round table
Pnotographed by W. P. Cornell, Ideal Photo Studio, Toronto, Ontario, Canada
Source: Tucker Tiddlywinks Collection