” La pratica della perspettiva” was only published once before 1800.
Barbaro, Daniele Matteo Alvise (1568). “La pratica della perspettiva / di … Daniel Barbaro … opera molto utile a pittori, a scultori & ad architetti” , Provence
But there are several variants of this edition. The first issue was dated MDLXVIII on the title page and colophon. The date was changed to MDLXVIIII on both the title page and colophon, but the sheets from both issues were mixed so that some copies have title pages and colophons bearing different dates. A third title page with a large, geometric woodcut border is undated, does not bear the imprint or printers’ device, and reads “. . . Opera Molto Profittevole À Pittori, Scvultori, Et Architetti.”