Why is the copy constructor not called when objects are allocated on heap?

class Guitars
{
private:
    int serialNumber{0};
    float price{0.0};
    // GuitarSpecs spec{};

public:
    Guitars(int serNum, float price)
    {
        this->serialNumber = serNum;
        this->price = price;
    };
    Guitars(const Guitars &s)
        : serialNumber{s.serialNumber}, price{s.price}
    {
        std::cout << "Copy" << std::endl;
    };

    Guitars(Guitars &&source) noexcept : serialNumber{source.serialNumber}, price{source.price}
    {
        source.serialNumber = NULL;
        source.price = NULL;
        std::cout << "Move" << std::endl;
    };

    int GetSerial() const { return serialNumber; };
    float GetPrice() const { return price; };
    void SetPrice(float x) { this->price = x; }
};

class Inventory
{
private:
    list<Guitars *> *guitarList;

public:
    Inventory()
    {
        guitarList = new list<Guitars *>;
    }

    void AddGuitar(int serNum, float price)
    {
        Guitars *x = new Guitars(serNum, price);
        // Guitars x(serNum,price);
        guitarList->push_back(x);
    }

    void Display()
    {
        for (auto &&i : *guitarList)
        {
            std::cout << i->GetPrice() << "   " << i->GetSerial() << endl;
        }
    }

    ~Inventory()
    {
        for (auto &&i : *guitarList)
        {
            std::cout << i->GetSerial() << "  "
                      << "deleted " << std::endl;
            delete i;
        }
        std::cout << "List is deleted" << std::endl;
        delete guitarList;
    }
};

int main()
{
    Inventory I;
    I.AddGuitar(12050, 50.23);
    I.AddGuitar(10000, 20.00);
    I.Display();

    return 0;
}

Can someone please explain to me why is the copy constructor not called in the code above?

When I created a list of Guitar pointers on the heap along with Guitar object on the heap with a pointer pointing to them and save those pointers in Inventory list, copy constructor is not called. Why is that happening and is this one more efficient since the program is not ganna create copies of object, its created once on the heap and we save the pointer with us.