Joined: Jan 2008
Posts: 23,639
Likes: 1,106
From: Mans of NC & SW UT Desert
Bikes: 86 Katakura Silk, 87 Prologue X2, 88 Cimarron LE, 1975 Sekai 4000 Professional, 73 Paramount, plus more
Should have a date code on the underside rear, on the frame. I can almost see it on your second picture.
Not much value there, you did see these on Raleigh 20s and similar. The Brooks with value are the typical leather road bike saddle.