Posted 1 Month ago Kay Girl Fresh Boarder Posts: 1   I have aquired an antique bed that reqires a strange size mattress 49 x 71. Would anyone know the age of the bed based on the mattress size. The administrator has disabled public write access. Posted 1 Month ago Linda Admin Posts: 38   I didn't have much luck searching but it is usually much easier to search for the bed by name of manufacturer or artist and even ask the ones that old it to you what they know about its history The administrator has disabled public write access.