Somewhere I've got a magazine with an ad for the original CETME model imported during the 1960s. According to the ad anyway, it was the early model that took that weird 7.62x51 CETME version of the NATO cartridge that had reduced powder charges. To sweeten the deal it came with a thousand round case of the special ammunition. If I recall correctly this deal was incredibly expensive, $199.99. extra ammo was something like $20 or $30 a case.
In hindsight these we're probably the Mars import models and regular NATO chambering. Someone probably got a hold of a bunch of the reduced power ammunition for the model b and couldn't unload it otherwise, so they bundled it with the rifle. Prior to the internet the average guy researching esoteric import firearms was rather limited on the information, and it was probably the 1990s before I understood that there was actually a version that took NATO ammo instead of this reduced power stuff.
Of course a mint condition Mars import these days usually goes through an auction house for around 5 grand. I wonder what an unopened case of the special ammo is worth nowadays?
Original ad for the Mars imports, not the one I saw.
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