jeffmoss26 wrote:looks like a Lockwood P4 keyway from Australia. Perhaps one of our members in the southern hemisphere can assist!
This is an old restricted profile and is part of a series P1, P2, P3 etc for which there is a master profile. Although its protection (Registered Design which is like a Design Patent) would be expired, after-market blank manufacturers may have decided it is not worthwhile producing blanks for them. I have only seen P1-P3 in New Zealand, 15 profiles were probably possible in theory, but never tooled up in practice.
Although it was probably made by Lockwood, the keys were probably unbranded or branded with a locksmith's name.
There is now an enormous proliferation of such keys and plugs to fit Lockwood products or those with the same basic dimensions. Australian Lock (of Bilock fame) and other manufacturers also produce their own ranges of restricted plugs and blanks. So even if legal protection expires the aftermarket blank manufacturers would find the market too fragmented to be worthwhile making blanks for them.
