Hi, thanks for your question. There's very little chance this piano was built before 1800. Piano technology was not up to the level it was in about the mid 19th century. There's only one entry in the atlas for an Edward Seuffert, listing an established date of 1800. Because the piano is very old either way, I would recommend it be appraised in person so your appraiser can judge actual condition. The history of this particular instrument would not be able to be researched, though you might find some additional background on the company. The relatively non-existent entry in the atlas tells me little info is available and the company likely went out of business before 1900. Hope this helps, best wishes!
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