1 lx 6 months ago NFI.And the thing is that this is actually a 6122, not the subsequent 7670 version that had real small f-holes. Serial #1 2167 which is January of '72 if I'm reading it right. Like the '71, no mute but still with the backpad. Pretty sure the f-holes are factory or somebody went to a lot of work to add them correctly. Sloppy badge. Cool case. Love double-cuts with large f-holes.