have mystake - JAWA-CZ 175 from year 1971 is ****. This no "Jawa-CZ" but this type is only "CZ 175" Jawa and CZ is different brand. Just beetwen year 54 to 57 make motorcycles together from one brand ( Jawa-CZ ) motorcycles 250 and 350 make Jawa in Tynec n/S and 125/175 make CZ in Strakonice. But only to year 1959. Regards and sorry for my bad english.