You won't get rich with circulated Geo VI cents. They are common and have been hoarded for more than 50 years ( I know because I'm one of the hoarders). I sell rolls (no damaged/corroded coins) for $2 Cdn, including both 1948's.
The 1949 A to denticle variety carries a premium because it is only on about 2% of the coins made. Your 2 coins look to be in VF+ condition. I have sold several of this grade on ebay for around $5.
For the 1948's, the A to and A off large denticle are closer to 50% each. The A to small denticle is harder to find than the other 2 but there is not much demand. I tried selling the 3 varieties (F and VF) together and had little interest and sold them for $3.