06-04-2011, 09:09 PM
I'm not 100% positive, but I am pretty sure the original electrolytics were all Mershon brand, copper cans. I have seen Spragues like the single one in your 71 mounted in 70 and 90 sets, but I feel these were replacements. Some of those Sprague caps were either nickel or chrome plated.
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Ron Ramirez
Ferdinand IN