1978 Ludwig LM402 Supraphonic Snare - 6.5x14 Bonham size/era 

This snare is for sale on reverb.com and it is a 1978 LM402 Ludwig Superaphonic. It is the size that John Bonham used during his during his time with Led Zeppelin. The serial number is 1861412, which dates it to 1978. It has the proper throw off, muffler, and Ludalloy sticker inside. The badge is pointy, further indicating the 1970s time frame.