I am extremely surprised by your statement.
According to the records of the Archives départementales de la Moselle, the city of Grostenquin only has parish records in their archive back to 1694. These are in cote 5 E 184/1, which includes the years 1694 to 1764, with records for 1701, and 1716 to 1736 missing; and in cote 5 E 184/2, which covers the years 1765 to 1791. This catalogue is the most recent available by Gilles Meyer and Line Skorka. It was published in 2008, with a republication earlier this year, in 2010. Here is the link to this information online:
Archives départementales de la Moselle:http://www.archives57.com/frontSite?controller=ViewPage&...
I also checked the Family History Library in the United States. The parish records they have microfilmed in 1986 and 1988 cover these same years.
Family History Library Cataloguehttp://www.familysearch.org/eng/Library/FHLC/frameset_fhlc.a...
Perhaps you are referring to a book of transcriptions from records of Grostenquin published in 1984, by the Cercle généalogiques de Lorraine in Metz, compiled by Paulette Henriot, René Maire, and Genest Petry. They reportedly extracted some holdings in the town hall (« mairie ») that go to 1678. -- This book is at the Departemental Archives, Genealogy Circle of Lorraine, the Family History Library in the U.S., and other places, but it is not microfilmed.
If it is true that there are some parish records of this vintage at the town hall that are not in the departmental archive, this would be « highly » unusual for a tiny place that cannot have good preservation facilities (only 569 live in Grostenquin according to the last census).
What records do you « actually have » that these sources do not? Perhaps your records are for a different town? Please let me know.
Thank you for your reply.