This is entitled Snakes in Venice. Original size is 5-1/2 x 8-1/4 inches. The little image of Venice is a vintage postcard of an unusual size, 1-3/4 x 5-1/2 inches. Here is the back of another:
The background is the marbled endpaper from an old book. The snake was scanned from Seba's Snakes and Lizards by Albertus Seba, published by Dover (the original work was published in 1731 in Amsterdam.) I find that the confluence of all these details are part of the charm of collage. Although I guess snakes aren't intrinsically charming! Be that as it may, I hope you like the work, thanks for looking.