Greg,
Now this value bit is bugging me
It may be that old age and poverty are finally taking their toll, but my feeling is that this is from the late 30s by virtue of the packaging. Now I remember from the 1950's that 10 Shillings was quite a lot of money, or it seemed so to me, but then it is only about £22 in todays money.
So I did a quick check. I bought this house for £66,000 in 1986, which converted to todays money comes out at about £130,000 give or take a bit. Now considering that the house next door which is a bit smaller has just sold for £330,000 what does that tells us about relative values or whatever?
I also know that in 1954 my parents bought a house in Epsom, Surrey for £1,100 which converted to todays money would be just over £20,000. That house has just sold for just under £400,000 to be converted into 4 apartments.
Given that a 1950's Parker "51" would have been around £5, then 10/6 would not have been that much, but then the "51" was a top end pen then, (and still is, but I would say that

), but still a not insignificant purchase. If however it dates from the 1930s, then it would be significantly more in relative terms.
Sorry for the hijack Old Griz, but this value thing is just bugging me.........
Oh and here are my references.
http://eh.net/hmit/ppowerbp/http://www.parliament.uk/commons/lib/resea...99/rp99-020.pdfFinally, the famous quote from Benjamin Disraeli or Mark Twain "There are three types of lies - lies, damn lies, and statistics." or as I prefer from A E Houseman "statistics to an engineer are like a lampost to a drunk, more for support than illumination"
Jim