I've partially stripped an 84' and an 88' QR Helico Matic hubs down for you (NoS) , and find 13 x 5/32" bearings on both sides !. Hope this helps.
Bob (what's the lowest form of wit) Reid Stonehaven Scotland
> From: Bob Reid <email@example.com>
> Date: Fri, 10 Nov 2000 12:41:57 +0000
> To: Classic Rendevous <firstname.lastname@example.org>
> Subject: [Classicrendezvous] Helicomatic Bearings
> Just a quick question......
> What size bearings & how many were fitted to Maillard Helicomatic hubs
> (circa 88) ?
> "bearing" in mind the difference between left and right sides !
> Bob (I'm not going to strip one to find out) Reid