It therefore appears as though the the S in ICS is only an indication as to whether it is a Factory Special Run or FSR guitar (manufactured by Cor-Tek in Indonesia). IS: I = Indonesia, S = Samick, the serial number prefix is followed by a 2 number year. In 2009-10 some Indonesian Squier's had the prefix ICS09XXXXX and ICS10XXXXX.It also appears likely that any FSR guitar beginning with ICS will be a Squier 'Standard' as opposed to any of the other models i.e. In your case though it is a Vintage Modified model. I've also seen some serials starting "I" that were made in India. There are a number of standard models that have the ICS prefix some are FSR but some are just normal run models. I honestly don't know about the extra digit other than to set apart instruments for FMIC distribution from those going to international distributors.Whenever there is a serial irregularity on a FMIC instrument quite often that is the reason why.This is a practice that actually goes back to Fender's early days.Squier is Fender-sharing its product platforms, trademarks, standards and iconic designs.Squier is the launching pad for beginners, pointing intermediate and advancing guitarists toward their ultimate goal-owning a Fender! Squier Company manufactured strings for violins, banjos, and guitars.
Jerome Bonaparte Squier, a young English immigrant who arrived in Battle Creek, Michigan, in the latter part of the 19th century, was a farmer and shoemaker who had learned the fine European art of violin making. Victor Squier started making his own hand-wound violin strings, and the business grew so quickly that he and his employees improvised a dramatic production increase by converting a treadle sewing machine into a string winder capable of producing 1,000 uniformly high-quality strings per day.Fender Musical Instruments Corporation entered the picture in the 1950s, when the V. Squier Company began supplying Southern California inventor and businessman Leo Fender with strings for his unusual new electric guitars. Before the Fender Squier line of guitars was introduced in 1982, Fender was making lower priced guitars such as the Fender Lead series at its Fullerton, California plant.Until the introduction of the Fender Squier series, Fender had never produced lower priced guitars based on its main Stratocaster and Telecaster models and had always used different model designs for its lower priced guitars.With those goals and others in mind, Squier will continue to offer products with features and prices that deliver truly excellent value, from beginners to hobbyists to working musicians alike. It was established in 1890 by Victor Carroll Squier in Battle Creek, Michigan. By 1975, Squier became defunct as a manufacturer and a brand name for strings, as Fender opted to market its strings under the Fender brand name.