This coin feels so much lighter than any other pure nickel 5 cent it also has much less magnetic pull a lot less,also makes higher pitch sound when dropped.I know from research Canada also does currency for many other countries,could this be one? The weigh scale is a cheap one but it shouldn’t come up 2grams under weight,every other nickel I weigh comes up 4g.
normal weight it is 4.54 gr. on 100% Ni. Your coin show more that was from the begin or end of the roll where debris and gas between the molecular structure could be find. With the lost of the parts on your coin, and took in consideration that probably your coin haas carbon debris I am not surprise of the weight. That year was the second bigger production of the bevers in 70's with 139 mill coins struck. About the struck on foreign planchet. The RCM allways has a very strick procedures for foreign coins and the only samples knows was man made and not Mint error. Silvio
I am not surprised your coin has low weight with the amount of missing metal that shows. I think it is Post Mint Damage due to rim dots being/showing on the low areas of the rim. Quite obvious at 2:00 on the date side. If a defect in the planchet was there before the strike the designs features would not show in recessed areas of the defect.
