Probably a picture from the 1940s, taken from Plantinga advertisement material.

Plantinga Beerenburg label, probably from the 1960s or 1970s. Scan by Peter Mulder.

Plantinga Beerenburg label, probably from the 1980s. Scan by Peter Mulder.

Bottle of Beerenburg from the early 1990s. De barcode, containing 710631, indicates that the product was made in the Herman Janson/UTO time, i.e. definitely after 1971.

After too long an absence, Plantinga Beerenburg was re-introduced in 2008 as "Boalsert 'KP' Beerenburg". This was the originally intended new front label (notice presence of the name 'Plantinga' that was later discovered not to be allowed due it being a registered trademark). Note the signature, which is not the Plantinga signature on any other products. Apparently this is a random signature. The finally released products had different labels. Pictures provided by Johan van der Weide.

An original "banned style" 1 litre bottle. Picture provided by Johan van der Weide.

After the design change (without the 'Plantinga' name), this became the new front label... The signature is still the "random" one. Note the first part of the bar code on the rear label, 710631, which is the code for UTO/Herman Jansen and tells us it's still made by them or one of their affiliated companies. Picture provided by Johan van der Weide.

The current 1 litre "Boalsert KP Beerenburg" bottle. Picture by Johan van der Weide.

Label of the 100 cc "kleintje" ("small") Boalsert KP Beerenburg.Picture by Johan van der Weide.

The way this looks, who wouldn't want to have a KP drink on a cold winter evening? Picture taken from the Boalsert KP Beerenburg Facebook page.

A promo display of quite a few bottles of Beerenburg and some glasses.

Miniature (40 cc) bottle of Plantinga Boeren Beerenburg.

Miniature (40 cc) bottle of Plantinga Friesche Beerenburg.

Plantinga Friesche Beerenburg label. The signature on all these Friesche/Boeren-Beerenburg reads "Plantinga" but is not the same one as on all other Plantinga products. Scan by Peter Mulder.

Miniature (40 cc) bottle of Plantinga 34 Beerenburg. The signature on these bottles is the same as on most other Plantinga products, that of Louwrens Baltus Plantinga.

One litre bottle of Plantinga 34 Beerenburg, a larger version from the "Maak je borst maar nat" advertisement from the "Advertisements" section. Picture from geheugenvannederland.nl.