About 1910.
This one seems to be related to McCall 2550, although in this case, rather than holding her palette and brush, our model holds her fluffy little dish mop, ready to bring her cut glass pitcher and bowl to a gleaming shine.
Like McCall 2550, there are no pockets in this apron; I can never fathom an apron without pockets.
The pattern itself doesn't seem to have been used much, but the envelope has certainly had a hard life.
The maker must have been in a hurry when she folded up the pattern pieces, as several scraps of fabric got swept into the folds - very possibly a Stifel indigo. This is the second apron pattern I have with evidence of having been made up in an indigo calico.
I recently decided I needed an apron to keep in the sewing room, so I made up this pattern in some pink chambray I had on hand.
This pattern was produced before either fabric layout diagrams or detailed construction instructions were offered, so the maker is on her own to decide whether or not to face the yoke (I did, for strength and neatness) and how to finished the edges of the straps and upper backs. (I cut 1 1/2" bias strips of the chambray and used them as facings.)
This apron is quite large. The front yoke finishes to 16" and I think this apron would easily accommodate a bust measurement of about 40". I shortened the pattern by 5" and with a 1" doubled-over hem, ended up with an apron that ends just above my ankle. The circumference at the bottom is 80". The ties are at mid back, which isn't as inconvenient to reach as you might think.