HC Deb 03 February 1949 vol 460 c261W
64. Brigadier Rayner

asked the Financial Secretary to the Treasury whether he has considered the difficulty of using the thicker new cupro-nickel shilling for meters; why this difficulty was not anticipated when the decision to thicken the coin was taken; and what steps he proposes to take.

Mr. Glenvil Hall

The difference in maximum thickness between new shillings of the old and the new composition is five thousandths of an inch and is necessitated by the altered specific gravity since the coins have been kept of the same diameter and weight. Difficulties with gas meters have only recently been reported and no difficulty is experienced with other types of slot machines for which shillings are used. Such occasional difficulty as may be experienced is probably due to absolutely new coins with slight burrs which wear off after a very little use. Large users of slot machines were consulted before the change was made and makers have been kept informed.