Bank Of England Ten Shillings

Sounds like your note is the following.

http://www.bankofengland.co.uk/bank...-SeriesC.htm

Date first issued: 12 October 1961
Date last issued: 13 October 1969
Date ceased to be legal tender: 22 November 1970
Colour: Red-brown.
Size: 5 ½" x 2 5/8" (140mm x 67mm)
Design: Robert Austin. First and only issued Bank of England 10 Shilling note to carry portrait of monarch.

Take a look at link and tell us if it is.

British decimalization was unique in that the primary monetary unit, the pound, remained unchanged - only the fractional units were replaced. The "predecimal pound" and the "decimal pound" are one and the same thing, so pound-denominated notes from the decimal period are still legal tender for face value (except for 1 pound notes - these are no longer legal tender, but are still redeemed for full face value by the BoE). The 10 shilling note was withdrawn when the shilling became obsolete, but the BoE has never backed down from it's stated promise to "pay the bearer", and would still be redeemeable at the BoE for face value - half a pound, or 50 pence in decimal equivalents.

As for predecimal coins, they were issued by the government, not the Bank of England. They've been demonetized, but I believe banks will still take them at face value. The government is no doubt happy to accept them at face value, because they all contain more than that in scrap metal value - redeemed predecimal coins would be melted down and recycled for profit.

There was indeed a different variety of the LK Obrien 10 bob note, issued 21/11/1955 known as the First Period Series A Britannia from 1955 to 1960 Value is determined by the Serial Cypher and the condition of the note.These sell on ebay at reasonable prices for good condition, check out http://cgi.ebay.com/LK-OBRIEN-1955-...ES_W0QQitemZ370118512285QQcmdZViewItemQQptZUK_Coins_Banknotes_GL?hash=item370118512285&_trksid=p3286.c0.m14&_trkparms=72:1684%7C66:4%7C65:12%7C39:1%7C240:1318