Coins from 1937-1942 (Beaver Reverse) weigh 4.54 grams, with a diameter of 21.21 mm and a thickness of 1.7 mm. They have a composition of .99 nickel.
In 1937, the beaver motif was introduced for the five cents after being first considered for the ten cent coin. A dot appears after the date on all 1937 coins. This was done to balance the design.
BC-24a: 1937 $10 Osborne-Towers, PMG VF30 Serial #A/D0788166
BC-29a: 1954 Devil's Face $1.00 Coyne-Towers, PMG GU65-EPQ #C/A3488779