TL;DR: The bottle was made by Owens-Illinois Glass Company in 1938 at their Toledo, Ohio factory.
To summarize what I've read (source below), we know three things right away:
The logo is Owens-Illinois. This design was used starting late 1929 into 1954 (caveats on page 3 of doc)The two numbers at the top (generally) list the factory identifier and a year code, in that order.The four-digit number on the bottom is the cavity number (a product identifier or old-timey bar code, if you will)Point 1 gives us an initial time constraint of 1930-1954.Point 2:The factory identifier looks like a 1; from the table on page 6 of the PDF we see that it corresponds to their Toledo, Ohio factory and was used 1930-1950.The year code is a single digit, 8. Given our constraints above that means this was made in 1938 or 1948. However, on page 11 it says that two-digit year codes were adopted starting in the 1940s, so that means this must have been made in 1938.Point 3: I looked in an old catalog I found (see below) and there's no entry for mold 1845. I'm not too surprised, since this bottle was made years after the catalog was published.
My primary source is here. A scanned O-I catalog from around 1935 can be found here. The index is in file 2.
