Sorry I wasn't very clear. They are steel it's a 1960's or 70's raleigh lenton. I heated them up enough to melt the braze ( probably to much) the steel was red in places :-(
@Aaron1980 started
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Sorry I wasn't very clear. They are steel it's a 1960's or 70's raleigh lenton. I heated them up enough to melt the braze ( probably to much) the steel was red in places :-(