Very nice looking plane. If the original plate was in fact Nickel, then the plane was made after the 'War Finish Regulations' that governed the use of metals were repealed, probably early '50s. (Sorry about the historical bits and the pun - it's a grey-area in dating these planes). Sometime in the mid 50s, Record changed the wing-head screws for the round serrated ones shown here.
Occasionally, the second-hand market throws up a plane that is complete with its box and in the days when manufacturers were allowed to set the retail prices, the boxes occasionally had the retailer's prices, pounds, shillings and pence in pencil.
If it's not an indelicate question, how may I put it....... could one afford the plating process?