Specimen---Any coin specially prepared for presentation to a collector or special individual (eg. a dignitary or politican). May or may not be struck multiple times.
Proof---Any coin struck on specially prepared planchets, with specially prepared dies, struck multiple times, receives special handling, generally made for collectors but may be used for presentation purposes.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire
Comments
Proof---Any coin struck on specially prepared planchets, with specially prepared dies, struck multiple times, receives special handling, generally made for collectors but may be used for presentation purposes.
Worry is the interest you pay on a debt you may not owe.
"Paper money eventually returns to its intrinsic value---zero."----Voltaire
"Everything you say should be true, but not everything true should be said."----Voltaire