Staatsarchiv Hamburg, Hamburg Passenger Lists, 1850-1934

Validator (claude-opus-5-5, 2026-10-28): consistent, confidence 3/4, tier record.
On the right-hand page, near the foot, the entry reads 'Tauber Anton', male, 17, from Mostitz, Austrian. Below it, bracketed with him, is 'Franzisca', 20, marked 'Schwester'. This matches the claim's name, age, residence and travelling sister. The ship and the 24 September 1903 date are not visible on this page and would need the list's title page to confirm. An age of 17 points to birth about 1886, one year off the claimed 1887, which is acceptable but worth noting.
Matches: Right-hand page, near bottom: surname 'Tauber', given name 'Anton', male, age 17; Next bracketed line: 'Franzisca', female, age 20, relationship column reads 'Schwester' (sister), matching 'with sister Františka'; Previous residence (Bisheriger Wohnort) reads 'Mostitz', as in the claim note; Nationality 'Oest' (Austria), fitting a Bohemian/Moravian emigrant; Volume is a Staatsarchiv Hamburg emigrant list (Auswandererlisten VIII A 1 Band 147), so the departure place is Hamburg
Limits: This page does not show the ship name or departure date. SS Fürst Bismarck and 24 Sep 1903 rest on the list header or the Ancestry index, not on this image.; The age gives only an approximate birth year, about 1885–1886. That is roughly one year from the claimed 1887, which is within tolerance but not exact.; The page stamp at top right looks like '2442', while the citation gives page 2439. This may be a neighbouring page of the same list.; The list does not identify Mostitz with a modern place name.