without actually seeing, touching, could be 1990's...they look like 30's, but you have to realize that reproductions have been around for a while!
and just because the fabric is old, does not mean the blocks are! I making a dresden plate right now using True vintage fabrics, on vintage muslin, by hand...it will appear to be a real vintage quilt when finished! However it was made between 2005 and ???
so one just never really knows...