“Still life with motifs of tulips,” by John Hertzbert, an autochrome made between 1904 and 1935, via Tekniska Museet (Sweden) on flickr (used under CC license).
This lantern slide was used in photography class lectures at the Royal Institute of Technology in Stockholm.
enclos*ure 
I thought it was going to be you being arty this morning. Love the soft effect.
No such luck. My Mac died (maybe) that morning, and my posts until today (4/2) were previously created and scheduled.