[CR]Can anyone ID this bottle cage

(Example: Production Builders)

Date: Sun, 27 Jan 2008 16:17:43 -0500
From: "Norm and Val Lafleur" <nvlafleur@verizon.net>
To: "classicrendezvous" <classicrendezvous@bikelist.org>
Subject: [CR]Can anyone ID this bottle cage

A recently acquired early 70's bike came with this cage attached. It certainly looks older than the 70's. Hinged mounting clamps, spring loaded closure. Only markings are "special NTC". Manufacturer? Date?

Pictures are in my Wool Jersey album

http://www.wooljersey.com/gallery/Norm+Lafleur/cage/

Norm Lafleur
Ashfield, Ma.
USA