3050 and 3051 tall coffee mugs- whats the difference?

We are trying to figure out what the main difference is between a 3050 and 3051 coffee mug
Mumof1: The cup in the gallery 1314 is cross-referenced with 3050
http://newzealandpottery.forumotion.net/gallery/Crown-Lynn-Shapes-with-Four-Digits/Castware-Earthenware-0900-1599/1314-pic_4391.htm
page 4 of this thread....
http://newzealandpottery.forumotion.net/t2158-show-us-your-mugs-crown-lynn-of-course?highlight=mugs ,  
shows that some of these mugs have a different docking base.. I wonder if you can look at your 1314 and see what the base looks like .. maybe that is the difference between the 2 cups. I have both types and one weighs heavier than the other as well.. ahh all adds to the mystery !  

Yesterday I took photos of my 3050's and 3051 with this question in mind.  
I have 12 of these coffee mugs and only two have the small docking ring on the base.



I know that one mug I have is the 3051 shape which is from an old catalogue and it has a wide base ring and its the leadlight yacht mug.  This photo shows the 3051 leadlight mug with another for height comparison and there is barely a mm difference!



These are the two with the small base ring and wouldn't they require a different saucer to the other? I have saucers for the Café 3050 mugs and will check out the others on them.


It is interesting to note what the records say for these mugs ...
3050 - Like 1314 - First made 18.8.80
3051 - Striated Coffee Mug - First made 18.8.80

I checked out Dictionary.com to see what striated means ....
marked with striae; furrowed; striped; streaked.
Ok so now I'm more confused than ever, as there are no stripes, streaks or furrows on my 3051 !!

Would it be the 8 sided mug it is similar? 
ps.. it has a 5cmd base rim.

Kat & Co. wrote:Would it be the 8 sided mug it is similar? 
ps.. it has a 5cmd base rim.

That is the 3077 mug Kat, the yachting mug above is a 3051 according to a 1988 Price List.

The 1314 has the wide docking base as does the one I like to think of as the stoneware one.

Finally spied the Modellers drawing for the 3051 yesterday !!! 

3051 Small Footed Mug - otherwise a 3050 First made 21.8.84 91mmh x 76mmw

Thank goodness that is now sorted and the description is nothing like the one in the hand written records !
I will change the description in the Gallery.

A post on a For Sale page on Facebook shows a Mocha set with the 3051 cups and they have Forma shaped saucers which makes sense with that little locking foot ring !!!!! This has taken years and years to work out and thanks to a question on that listing about the saucer shape, it finally fell into place

What colour are the saucers? And wonder what the backstamp is like.
Good work Ev 😊