Danish West Indies
The local postcard rate was 1 cent - but the St.Thomas Post office had depleted its supply of 1 cents from February 10 to March 1.
The DWI did not have a 1 cent postal stationery card at this time - so the bisected 4 cents stamp was the lowest denomination stamp avaiable and the sender had no choice - but to overpay with 1 cent.
Also see the page OVERPAYMENT
Only two postcards sent locally with overpayment during the 1 cent depletion period have been recorded.
This postcard is non philatelic. It is sent in the period where St.Thomas post office had received 1 cent stamps - but the sender has chosen to send the postcard overpaid with 1 cent.