a coat of arms with ostrich feathers on a antique wax seal stamp - een zegelstempel met struisveren op een familiewapen

 in the Delta 98 Den Haag collection:

an antique wax seal stamp with a coat of arms of a 1600-1750 era design, with on the shield / escutcheon and as crest

three ostrich feathers 

the ostrich feather is an important heraldic symbol due to it's occurence in the heraldic devices of the English Royal family since the time of Edward the 3rd (1312-1377), it symbolised faithfulness, magnanimity, generosity and justice

we relate this seal and coat of arms to the Dutch family

Geesteranus

with a coat of arms of three ostrich feathers emerging from a pot, a family name that, after becoming extinct, went on in the name

Maas Geesteranus 

possible other ways of writing, or documented:

Geisteranus, Gheisteranus, Geesteren

but if the "pot" with two handles and standing on three legs is not a pot, kettle or vase, it might be a crown encirceld with, or surmounted by three ostrich feathers, especialy known as the royal badge of the Prince of Wales, a symbol going back to Medieval times, to the battle fields of Europe, to king Edward III's oldest son, Edward the Black Prince (1330-1376)

and to John of Bohemia / Jean de Boheme et de Luxembourg,

or to Edward's mother, from the family Hainault / Hainaut, the counts of Ostrevant, who married into the Tudor family :

and it can also be found with the coat of arms of the family De Medici :

 

According to the longstanding but now discredited legend, the Black Prince obtained the badge from the blind John I of Bohemia, against whom he fought at the Battle of Crécy in 1346. After the battle, the prince is said to have gone to the body of the dead king, and taken his helmet with its ostrich feather crest, afterwards incorporating the feathers into his arms, and adopting King John’s motto, “Ich Diene”, as his own. The story first appears in writing in 1376, the year of the Black Prince’s death. There is, however, no sound historical basis for it, and no evidence for King John having used either the crest (he actually bore a crest of vultures’ wings) or the motto.

Since a key factor in the English army’s victory at Crécy was the use of Welsh archers, it is also sometimes said to have been Edward’s pride in the men of Wales which led him to adopt a symbol alluding to their assistance. The German motto “Ich Dien” (“I serve”) is a near-homophone for the Welsh phrase “Eich Dyn” meaning “Your Man”, which might have helped endear the young Black Prince to the Welsh soldiers in particular. Again, however, there is no historical evidence to support this theory

 

we’ll stick to the Geesteranus origin...