A 1958 Martin 00-17 was just posted for sale at UMGF (no affiliation):
https://umgf.com/1958-martin-00-17-t....html#p2597042
By the way, I always felt I needed a 1 3/4" nut, but find with a thicker neck carve than the MLO, it makes the 1 11/16" workable. I adore my recent 1944 00-18 so much I sold a custom shop 00-30 with 1 3/4".