I think it was 1974 as the cover is different from my 75 cat.. Siddons didn't start making spanners till the 40s and from the 50s onwards became Australia's biggest best seller of mechanics tools. Still in business but now made overseas!
Graeme
I don't know what year it is, but I'm fairly sure it is not 1974, 1972, 1971, 1970 or 1968 since I have photos of dated catalogues from these years...
I note, however, that the
back cover of the eBay catalogue has the same photo of the wrench that appears on the
front cover of the 1968 catalogue...