Ångbåts A/B Grogg / Groggbolaget — cap-badge flag
image contributed by NDR, None
The cap badge attributed to Groggbolaget shows a blue flag with white AFS letters. Rosanoski considers use by both companies logical, but does not establish it. Photographs suggest a black funnel with a broad blue band; all but one photograph are black and white.
Paired funnel photographic colours qualified; no shared cargo-handling-company flag claim.