Using the "/playsound" command to play the anvil place sound plays the anvil land sound
When I used the playsound command to play the anvil place sound, it played the anvil land sound. I listened to the in-game and playsound commands for both many times, and the anvil place sound was definitely playing the anvil fall sound.
Commands Used
/playsound minecraft:block.anvil.land master @s
/playsound minecraft:block.anvil.place master @s
My master volume was at 75%.