It was a pleasure to be able to help.
Note: Your ancestor's signature was - as quite normal in those days when many could not write- a sign [ often one placed a cross, or another scribble..]. I had a look at his 1st marriage intention in 1643 and his 2nd in 1645 and in both cases his 'signature' was a sign, although under the 2nd marriage intention is was the letter H. The sign under that testament in 1652 more or less similar to the one he 'signed' with under his 1st marriage intention.
F.Y.I.: In the future it will be so much easier to search in these notary archives as many volunteers are participating in the project -> indexing these Amsterdam - notary acts. Will be indexed on dates, types of acts, persons, and geographical locations. See:
https://velehanden.nl/projecten/bekijk/details/project/amsterdam_notarieel_2 . As soon as the indexed info is online you can easily access them via the link :
https://notarieel.archief.amsterdam/start . Of course I had a look first if this particular testament was already there, but no..[ not yet]. For the non-indexed yet one still has to search via the other link,.
In the Province of North-Brabant there are similar projects running; the following are still running
- Bossche schepenprotocollen
- Notariële akten in Brabant 1743-1935 (almost finished )
- De notariële archieven van Regionaal Archief Tilburg
Other projects in 'our' province have already been completed and the results have been incorporated in de search engines of the particular archives.