A vintage mid century modern full/queen headboard.  Headboard is a full with a queen extension board added allowing it to fit both a full or queen mattress.  Headboard shows some lite wear but is in overall good condition.
 
Product Dimensions:  57.25"L x 40"H x 2"D (overall) // 53.5"L (full side rail slots) // 60"L (queen bolt holes)