Imprimerie F.G. Richir

French printing house in Paris Imprimerie F.G Richir used often special codes (printed on back cover) to identify the manufacturing date, e.g. 117, 128, 20, etc. The last number indicating the year and the first number(s) indicating the month. So, 117 means November 1957, 128 means December 1958 and 20 means February 1960, etc. May appear as "Imp. F.G.R.". Variation of Imprimerie F. Richir.