I have the first big 1 because it has a "bee" on it. 1st coin "bee" is Tonga 1977 KM#49 (2 Pa'anga denomination) metal-copper-nickel, mintage-12,000 , size-44.5mm grade/value XF-$4.00 UNC-$12.50 BU-$15.00 yours looks AU-$12.50 Ebay sellers sell this coin from $15.00-25.00 depending on grade.
2nd bottom coin is Tonga 1968 KM#37 (2 Pa'anga denomination) metal-copper-nickel, mintage-14,000, size-44.5mm grade/value VF-$1.50 XF-$2.50 UNC-$5.50 BU-$6.50 yours looks UNC+ $5.50-6.00