Currently, these are the box configurations for the HK91/HK93:
HK91 (brown outer cardboard box/brown cardboard inserts)(1974-1978)
HK91 (brown outer cardboard box/white styrofoam inserts)(1979-1989)
HK93 (brown outer cardboard box/brown cardboard inserts)(1974-1978)
HK93 (brown outer cardboard box/white styrofoam inserts)(1979-1989)
Tony
HK91 (brown outer cardboard box/brown cardboard inserts)(1974-1978)
HK91 (brown outer cardboard box/white styrofoam inserts)(1979-1989)
HK93 (brown outer cardboard box/brown cardboard inserts)(1974-1978)
HK93 (brown outer cardboard box/white styrofoam inserts)(1979-1989)
Tony