Soni Musicae released The Blanchet 1720, a free soundfont copied after a 18th century french instrument created by Blanchet.
Using this soundbank in a sampler, you can play a virtual harpsichord copied after a 18th century french instrument by Blanchet. It has one manual, two 8′ stops, plus a lute stop. This soundbank is available in soundfont, and Kontakt 2 format.
The soundfont version is compressed so you will need sfark to decompress it. You can download this small software here.
More info: The Blanchet 1720 Harpsichord Soundfont