The images given are the same for any catalog, the official national overprints that are much smaller than the on the stamp shown. Sizes are not given here. 38 is also in vertical format as shown.
This is the Maritime Customs type overprint, SG type 38.
38 is the right basic style, but definitely not a match. Compare the last character guo/kuo
as a start. On the stamp, the "box" is clearly wider than it is tall as just one feature -- different typefaces, in other words. There are other differences in that and other characters.