Lucky said:
Lucky, the Engelhard you posted is a later poured version. They are common and I would only pay $2-3 (US) over spot. To me they are little more than bullion.
Earlier poured bars can take on numismatic premiums - provided you can find any.
Here is a quick Engelhard primer. 3 oz and 5 oz poured bars show up with frequency on ebay, check past prices. 4 oz and 7 oz poured Engelhard bars are quite rare. 2 oz poured Engelhards are excessively rare.
Here are examples of the types of bars you would want to snap up if you can. The Canadian made bars have the so-call bull's horns while USA made ones do not.
