The Corporate Logo Branding of Powerful Signature is a variant of the ancient Coat of Arms of Nigtevecht, a former Dutch municipality, as a reference to my family name "van Nigtevecht". The inverted keys as Logo is out of respect of the Family Huydecoper Lord of Nigtevecht as their Coat of Arms.
In the 1990s, I saw an old drawing of the coat of arms with the keys pointing down, described as a very old version no longer in use. Whether true or not, I have since used this unconfirmed ancient version with "NIGTEVECHT" and keys pointing down, out of respect for the original design used by the family "Huydecoper, Lord of Nigtevecht" and the formerly royal acceptance of the municipality's coat of arms. The coat of arms fell out of use after a municipal merger in 1986.
The Coat of Arms Nigtevecht is still visible in stone above the door of the former town hall (Raadhuis) at Dorpsstraat 142 in Nigtevecht.
The following articles are some interesting and peculiar backgrounds about the Coat of Arms and family names, the history of the area. It is not an academic peer reviewed article, it is just the best I could find on the internet to follow up stories which I was told when I was young.