I have removed the repeated photos from your first post. These are definitely older. Love the "snowflake" looking detailing in them. They appear to be Victorian to me...let's see what others here have to say about them.
I agree with Mary Jane, they look Victorian to me. Just from looking at the photos, I would say 1880s. I will also wait to see who else might chime in. They are really a lovely pair, the little star flowers or snowflakes are really wonderful!
The endless research I've been doing while prepping for all these Civil War 150th events says these are either very late Victorian or Edwardian. Otherwise, they'd be "open." (i.e. crotchless). Indelicate, but true. Ladies didn't wear closed drawers until the outfits worn over them were easier to manipulate when nature called. Very hard to use the privvy in a hoop, bustle, or other cumbersome outfit when you had to unbutton and literally "drop your drawers" to do so. Of course, there may have been exceptions. I'm no expert.
