I’m curious how you go about checking the wallet address on these coins. With the Lealana Litecoins you can just type in the partial wallet address. But doing that on blockchain.com with Bitcoin addresses does not seem to work. Any info would be appreciated. Thanks. 
you can use uberbills.com or walletexplorer.com
both accept first-bits of btc coins.
https://casascius.uberbills.com/?address=1CA5dTV7pgaT1kxbkrhKV9NdN8BffYwZgH
https://www.walletexplorer.com/address/1CA5dTV7pgaT1kxbkrhKV9NdN8BffYwZgH?from_firstbits=1CA5dTV7
exactly, you can use the links posted by minerjones for that or you go to this link👉https://casasciustracker.com/
this is the page i personally use to check if the cas-coin-address i asked for is still loaded or in its original condition