I don't think the top one is an L1A1. Appears to have a parkerized finish. Parkerized with the protruding press stud; most likely an AustralianL1A2.
I don't think the top one is an L1A1. Appears to have a parkerized finish. Parkerized with the protruding press stud; most likely an AustralianL1A2.