Some more info on Metallic paint codes
Earlier this year I was speaking with Eric Harrison (he heads up the UK 2000/2600 club) about the paint codes for my Sprint.
Eric is a font of information and details about our cars, and he very kindly took the time to send me the below text. Eric knows his stuff, but if there is anything below that looks incorrect, please comment, would be good to keep these details up-to-date.
Hope it is useful for you.
With reference to your Sprint... assuming the paint colour is indeed a period Alfa colour then it would appear to be AR727 Grigio Chiaro Metallic.
This is the only period AR Grey that even remotely comes close to the colour of your car. It was never officially available for the 102 series 2000 Sprint but did become available as a colour option on the 106 series 2600 Sprint for mainland Europe only. (It was not an option on the American market cars, the British market cars and probably not the Australian market cars. It was also used on the 1900C Pinin Farina coupe' and the 1900CSS tipo 3).
The colour was mainly listed as AR727 but I have also seen it listed as AR727/737 (Five digit code 27653 Met - Ault & Wiborg / Spies Hecker in Gipgloss, Aultrafast and Aultraspeed) and AR 727/748 (Five digit code 81437 COB - Clear Over Base Metallic Ault & Wiborg / Spies Hecker in Aultragem and Gipgloss Baseline).
If you just go on the name Grigio Chiaro then AR222, AR612A, AR762 and AR765 are also Grigio Chiaro and AR676/775 is Grigio Chiara. There are over fifty different Alfa Silver's listed in the Ault & Wiborg catalogue alone. Paint swatches from Spies & Hecker should be available on request for both AR727 and AR737 the slightly darker Grigio Medio Metallic.
The original paint colour swatches were made by Italver S.p.A. Italiana Vernici, Via Privata Bolla 27 (via Gallarate), Milano. Italia (Tel: 305.706/7/8/9 - 308.30.46/47). Italver is a subsidiary of P.P.G. Pittsburgh Paints Group, Pittsburgh Paints Group General Office, PPG Industries Inc, One PPG Place, Pittsburgh, PA 15272, USA. (Tel: 0101 412 434 3131).
The German swatches came from Herbol Werke, Herbig, Haarhaus A,G., Koln, Germany. ICI paints are at ICI Paints, Wexham Road, Slough, Berks, SL2 5DS (Tel: 01753 550000) and Ault & Wiborg are at Spies-Hecker, P.O. Box 18, Dagenham, Essex, RM8 1AW (Tel: 0181 597 9281 with their parent company at Spies Hecker GmbH, Fritz Hecker Strasse 47-107, D50943 Cologne 51, Germany. (Tel: 010 49 221 3706 06).
The original Alfa Romeo Service Sheet 0.00.24 dated 10/7/1961 shows the only grey as Grey KF. 18012 A.R. standard 3536.20722 (synthetic) but I think this is Coupe' Grey which is a darker non-metallic grey colour (many UK imported 2600 Sprints were in Coupe' Grey). Ditzler has 18012 as a 32424 code.
I have a Dupont mix for the AR727 colour of :
411 L Aluminium 156,5
406 L Black 14
401 L White 20
441 L Violet 0,5
418 L Light Blue 1
470 L Binder B 286
490 L Balancer B 447
MMF CG 193 L
Composition formulas are in grammes out of one litre
The colour above is a Metallic Colour applicable prior to the introduction of the "Reflow" process (Presumably this is for Cellulose then)
The colour below is AR748 and is a Reflow process mix (Presumably for the Twin Pack Acryllic)
441 L Aluminium 216
406 L Black 30
416 L Blue 1
440 L Violet 1
470 L Binder B 372
490 L Balancer B 295
These figures above should give any paint guy a start but it is still best to measure with a Spectrometer.
I have AR727 under an ICI ref B236B for the Metallic and 4781M for the COBM. ICI 2K twin pack Acryllic is shown as code CR, ICI Permobel Synthetic Topcoat as 4781M, A&W Gipgloss cellulose enamel , A&W Aultraspeed Two Pack Acrylic and A&W Aultraspeed one pack synthetic all use the 27653 code, Valentines Paints uses 35977 code and PPG Deltron Cellulose uses the .727 code.
102 Sprint 2000
In the family:
1960 750/101 Giulietta Sprint
1964 105 GTC
1962 Giulia Sprint Speciale (rhd)
In the past:
1939 MG TB - full race (historic). Multiple championship winning. Raced in the family for more than 20 years.
1964 Morris Minor (first car!) - it taught me a lot, then it died
1984 Land Rover Lightweight 24V - ex Army - Falklands conflict. Ridiculously fun during University years