Oh Goodie, goodie....a challenge
I don't have any idea on the car brand....but it does indeed show a Dutch "provincie kenteken"......from 1906-1950 Netherlands had licence plates based on region. "H" was Zuid-Holland. "57026" would indicate that the plate was released in 1927.
The National Archives hold lists with these licence plates, but you will have to make an appointment to have a look in the actual archive.
https://www.nationaalarchief.nl/onde...vnr/%407-35~11