While browsing e-bay came across a few limited edition badges, links below.
EUPHONIC http://www.ebay.co.uk/itm/Mazda-MX5-MX-5-Euphonic-Badge-/231440718014?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item35e2f118be
HARVARD http://www.ebay.co.uk/itm/Pair-of-Repro-Mazda-MX5-Harvard-Special-Edition-Badge-Inserts-/231354540833?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item35ddce2321
MERLOT http://www.ebay.co.uk/itm/Pair-of-Repro-Mazda-MX5-Merlot-Special-Edition-Badge-Inserts-/231354543107?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item35ddce2c03
SE http://www.ebay.co.uk/itm/Pair-of-Repro-Mazda-MX5-S-E-Special-Edition-Badge-Inserts-/331370140693?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item4d27331415
NEVADA http://www.ebay.co.uk/itm/Pair-of-Repro-Mazda-MX5-Nevada-Special-Edition-Badge-Inserts-/331370140688?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item4d27331410
ARTIC http://www.ebay.co.uk/itm/Genuine-New-MAZDA-ARCTIC-BADGE-Wing-Emblem-MX-5-Miata-1990-2005-Mk1-Mk2-SED-LED-/300881829951?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item460df4603f
SPORT http://www.ebay.co.uk/itm/Pair-of-Repro-Mazda-MX5-Sport-Edition-Badge-Inserts-/231382861240?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Car+Make%3AMazda|Model%3AMX-5&hash=item35df7e45b8
TRILOGY http://www.ebay.co.uk/itm/MAZDA-MX5-EUNOS-MK2-TRILOGY-MODEL-ORIGINAL-MAZDA-TRILOGY-BADGE-/151305677337?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item233a856a19
