No, that's not the predecessor to the predecessor of the E Type. It's a code that I am told is only used on 'Enquiry Office' machines distributing Post And Gos. No, I am still none the wiser either. But you'll need these to maintain a reasonably complete collection of the Machin Post And Gos.
Now, I can't tell which is which in these illustrations but checking the code numbers tells me that those above have MA13 in the background and those below have no year code.
These are likely to be quite scarce and make a nice group along with the 2nd Class items shown in the previous post. No, Post And Gos are not getting particularly interesting I'm afraid but definitely a lot cheaper since I reined back my standing orders!
Also appearing in the 2015 date codes are the 1st M15L MBIM from Business sheets and a 10p M15L Counter sheet issue.
My daughter actually went in to a Post Office to buy a stamp for my birthday card last week. She had noticed that I had put a 1st Class Rupert Bear stamp on a card for my brother (called Rupert) the week before and, knowing my love of Machins, had intended to put some interesting shades on the envelope to cheer me a little. They hadn't any with numeric values at all!
It hadn't occurred to me that we have no numeric stamp suitable for 1st Class or 2nd Class for that matter. You may have a book of 4 x 63p from 1997 perhaps but that was the last time we saw a 63p and you'd have to raid a 2010 Classic album Covers Prestige Booklet to get a 54p or go back to 2007 for any normal definitive.
I am surprised, though, that they don't stock the usual 1p, 2p, 5p, 10p, 20, 50p range which serves all eventualities without too many being required for any denomination. Anyway, i suggested that she buys some at a discount on Ebay where there are plenty going - and quite cheaply too!