Dont worry!You have a perfectly good clean example of the service respirator.Nice that it has the No2 antigas ointment in a jar.Contemporary pictures show this in use alongside the type in the tins.They are fairly scarce.
As for the crowsfoot markings..somtimes they are just mis-stamped and the printed ones just wear off.
Now you just have to find a good MKV or MKVI bag and some eyeshields.
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