There is an interesting chapter in "Alfa Romeo Giulietta Spider" (Giorgio Nada, editor) entitled "The Third Series", and this describes the changes made in the last version of the Giulietta Spider. The book is in Italian, but I have an English translation of this chapter. Pasted below is the text of the initial portion of the chapter, and if anyone would like a copy of the entire chapter as a pdf file, send me a PM with your email address. I also have a scan, as a pdf file, of the original Italian version. This includes pictures, one of which indicates that the radio block-off plate for the Series 3 Spiders was that later used for the Giulia Spiders.
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THE THIRD SERIES
In the second half of 1961, the Giulietta Spider underwent a small esthetic face-lift, both for industrial standardization problems and to make it even more attractive to its admirers. The third and last series of the convertibles of the Giuletta s family was therefore born, and it would be built officially until the beginning of the summer 1962. The most important modification applied on the exterior body concerns the rear lights.The optical unit, built both by Carello and by Altissimo, was of larger dimensions and included the reflector too. In order to assemble it, it had been necessary to enlarge the
lower part of the rear fin, without modifying the always-pleasant line of the Spider of the Milanese House. Next to the windshield, two water sprayers, necessary accessories, were installed. They were activated by a little rubberpump located next to the windshieldwiper switch. The small soft-plastic container for the liquid detergent was placed in the engine- compartment. The soft-top disappeared completely behind the seats. The
chromium-plated hinges used to open the trunk were now one-piece with two hooks where the top is hooked up. The badge of the House of Pinin Farina was entirely in plastic. In the interior, one particular modification helps the aficionados today to recognize this third generation of the Spider: the dashboard s fake-leather cover, held near the windshield by an aluminum strip screwed to the body. Also on the dashboard, the rear mirror has a support of new design and can be adjusted to an anti-dazzle position.
In between the two seats an accessory useful for those who smoke appears: an ashtray of chromium-plated metal. The inevitable cigarette lighter was first planned to be placed on the far right of the dashboard, but instead was placed in the middle of the push-button
board.