Royal Posthumus. Reliable, progressive and purposeful. For more than 145 years.

Royal Posthumus: stamps, name plates and name badges.

Royal Posthumus has been developing and supplying marking solutions for the business and private markets since 1865. Our product range includes stamps for various purposes, nameplates and badges and high-quality printed matter. The most important markets are offices, printers, the packaging industry, the security industry and private individuals. We market our own products under the brand name Posta.

One of the largest European players

In Europe, Royal Posthumus is one of the largest companies in the field of stamps, nameplates and engravings. With more than 60 employees we are active in the Benelux, France, Germany, Switzerland, Austria, Italy and the UK, with offices in Amsterdam, Eupen (Belgium) and Aachen (Germany).

Successful across generations

Royal Posthumus has always been a family business. On 1 June 1865, Jan Daniël Posthumus started a company in Amsterdam (now Damstraat), specialising in the manufacture of metal stamps and high quality engravings. At the beginning of the 20th century his sons Willem and Louis took over the business. In 1939 they sold the company to Johannes van der Plaats, who took up his post as director three years later. Thirty years later, in 1969, he hands over the management to his son Taco. In 2006, the third generation of Van der Plaats joined with grandson Nicholas.

Royal since 1920

In 1920 the company acquired the designation Royal and is called Koninklijke Fabrieken Posthumus. The private secretary of Queen Wilhelmina, Baron F.M.L. van Geel, writes about this: "I have shown your so excellently executed weapons to various heads of departments of the royal court; your address has been kept and I have no doubt that you will be contacted in case of any new orders. Your work does indeed fully deserve this.” After 1945, all companies that were allowed to call themselves Royal before the war are judged whether they still deserve this predicate. Posthumus regains this thanks in part to their multifaceted support for the Resistance.

Advanced technology at home
CNC engraving, counter-engraving, polymerisation; we have all the technology to manufacture our products in-house. This means you are assured of the highest quality.

CNC engraving
Engraving is the machining of material with hand cutters or milling cutters. Usually the engraving depth is between 0.1 and 3 mm. Our computer-controlled engraving machines work with a high-frequency spindle and an automatic milling cutter change. This ensures very high accuracy, with deviations of up to 0.03 mm. The machines are mainly used for engraving brass, aluminium, steel and plastic.
Products: e.g. steel impact stamps, customs stamps, brass fire, foil and embossing stamps, name badges, machine and name plates.

Contrast technology
A contrast is indispensable for an embossed print. Even if an embossing stamp is so perfect, only with a good contrast will you achieve the finest detail reproduction throughout the entire print run. At Royal Posthumus you can order your contrast's for any kind of printing press ready to use.

Hand-engraving
If the marking has to be clearly visible on the packaging, customers opt for hand engraved stamps. The hand engraver uses a plug or a pantograph for this purpose. For these stamps he first sticks a model by hand, for example 400%. This model is then reduced to 100% on the pantograph.
Products: Embossing stamps in 3D for exclusive labels, lacquer stamps or blind embossing stamps with, for example, family crests, engraved ship bells, etc.

Laser-engraving and polymerisation
The basis of the polymerisation process is the negative film which serves as a mask for further stamp production. In a special illuminator, the negative film is covered with a polymer layer. After exposure, the polymer undergoes a chemical reaction and becomes hard and insoluble. The unexposed parts remain soft and can be washed away with water. There are no environmental requirements for the waste products from this production process.
Products: office stamps, hobby stamps, stamps for specific packaging purposes.

UV printing technology
With this technique we print directly on all kinds of materials. White printing is also possible.
Products: Name badges, machine plates and name plates.

Vulcanisation
By heating sheets of rubber with a certain percentage of sulphur, cross-links are created which ensure an elastic and dimensionally stable end product. By placing this sheet on a mould and heating it to pressure in a press, the rubber conforms to the mould. This creates an upward image.
Products: Hobby stamps and stamps for special applications, such as packaging. 

Also visit De Stempelplaats for more products and ideas.