Piotr Grabrowski offers the beautiful free tiny Hauptwerk sample set of a Mascioni organ, built in 2016 for the Convent Church in Azzio, Italy.
The original sample set, which has to be installed before installing the extension, mimics the original organ, adding the missing C# and extending the limited compass of 27 pedal and 51 manual keys.
I created two extensions:
One user pointed out that Piotr has released a quiet update to v1.01, which I wasn't aware of. The only difference to v1.00 is the addition of a new screen (Both Jambs). I updated my extensions to v1.03 and v1.04.