One of the oldest vineyards on Long Island is listing its two grape-growing properties for a combined $10.8 million. The Palmer Vineyards first opened in 1983, but when the founder passed away in January, his family felt that the vineyard needed a new person at the helm. The two properties on the block are the winery, which sits on 61 acres in Aquebogue, and the vineyard, which comprises 62 acres in Cutchogue. They’re listed at $6.9 million and $3.9 million, respectively. Brokers told the Post that East End vineyards rarely go up for sale, although they said there is an active “whisper market” for the grape spots.