All monies actually in the treasury to the credit of the fund from which they are to be drawn, all monies credited to the fund from pooled cash in the treasurer’s group of accounts, and all monies applicable to the payment of the obligation and appropriation involved that are anticipated to come in the treasury before the maturity of such contract, agreement or obligation, from taxes or assessments, or from sales of service products, or by-products, or from any city undertaking, fees, charges, accounts and bills receivable, or other credits in process of collection, and all monies applicable to the payment of such obligation or appropriation, which are to be paid into the city treasury prior to the maturity thereof, arising from the sale or lease of lands or other property, and monies to be derived from lawfully authorized bonds sold and in the process of delivery, shall, for the purpose of such certificate, be deemed in the treasury to the credit of the appropriate fund and subject to such certification.