[GNC] How to treat a sale which involves more accounts?

[Boniforti Flavio]

Hi.
Still very noob here, so bear with me please.

I've got the following accounts (among others):

Music equipment
Music equipment sold
Checking account

When I buy music equipment, I take the money from my checking account and
add it to the "music equipment" account.
When I sell music equipment, how should I register it? I thought that the
account "music equipment" would decrease by the sold value, the checking
account would increase by the same amount... but what happens with the
"Music equipment sold" account?
Or am I wrong in separating "music equipment" from "music equipment sold"?

Thanks,
F.

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