not mine, in the sense that this is a picture of a picture...
I have a bunch of old glass slides that I picked up last year at an antiques barn in Maine - I gaffer taped this to a diffusion disk, propped up the disk in front of a lamp positioned to shine right on the glass slide - I then took LB images of the slide (with a macro attachment, I believe; but now I can't remember which one or whether, even, I stacked a couple of them).
This particular slide indicated "Warwick, England", but has no date - from the look of all the slides I'd guess within 10 years either side of 1900.
Sure it's your picture...your picture of a picture but not in a plagiarist sort of way...you gotta take the old stuff out and play with once in while don't you? I don't have any old glass slides...but I did just score a great little ambrotype without a case or enclosure. I'll have to try something with it...