That Serioro clutch indeed is gold.
Sometimes, You've got to have some luck : like finding a old style lockheed clutch m/c due to a typo-error on ebay.
Here's my muro-motori with some small Ducati stuff
The waterpumps on top, then two Rolly's and a 100 cc.
Then a 50cc first type waterpump, the muletto-engine and a Brio 100
Not on the pic (due to TOO heavy) are the 175 and 550 sidevalve and the IS7 diesel.
Below are some of the boxes containing Italian, english and american magazines from the 70's 80's and 90's (including the first pics of TT's F1's and 851's courtesy of Motosprint).
The wooden box (found on my attic in Italia) is made for Lampo Benzina (before the take-over by Standard Oil ,better known as Esso) and contained glass botlles with benzina, sold at the pharmacy. Early 20's. Now filled with pre-ww1 and 2 maps of Italia.
There's a second muro-motori with some real engines too
