It looks like the plastic mirror. You may want to look for a shop in your area which sells victorinox SAKs and see for yourself the survival kit and the type of mirror it is.
Don't buy the entire kit, just the parts you need. If not see if you can contact the distributor for victorinox in your area.

Cartotecnica S.A.
120 Monastiriou Str.
546 27 Thessaloniki
Tel. ++30 2 310 526 850
Fax ++30 2 310 551 718
carto@otenet.gr

HTH
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Trusbx