I'm trying to identify the maker of an Art Nouveau pot

I'm trying to identify the maker of this Art Nouveau pot/vase.  It is lusterware, and only markings on the bottom is an incised O or D , and incised number T544 or 1544. Also what looks like an ink in glaze that is VI.

Any chance of a picture?

But even without that VI is probably the date 6.

There is one well known English pottery that signed with roman numerals for the date, included a shape number and sometimes an artists monogram. That was Pilkington Royal Lancastrian. So you could have a lustre Vase by them in shape number 1544, dated 1906 and by the artist Dorothy Dacre who signed with a D. Get a picture loaded and we can confirm in about 10 seconds. If it is your very lucky they are all one offs and very collectable.

P.S

They also exhibited and sold in the States so it not unheard of them to turn up.

It's two different faces on either side, and the flowing red hair forms the handles

Ok that's not Pilkington. It's not an English company that I have seen.

The glaze on this vase is a type of lustre that started in the 1920's, very oily with a rainbow sheen kind of like petrol (gasoline). The very early 1890-1910 lustres are European potters trying to recreate the Chinese stoneware and Spanish Moorish glazes they had seen. By the 1920's they are doing glazes no one had seen, they are not copies but something very new. This has it's origins in that.

The numbers you are seeing on the base here are almost certainly the design numbers for that type of vase. The VI looks to be the artists signature. It is by no means certain that the vase and decoration happened at the same time. Plain vase are often sold to artists to decorate.

Its origins are difficult to pin down withy handling it. If its 1920's it will have signs of wear to the base and could be Austrian. Or an American copy of an Austrian type of vase. If its not then a rather large world war and rationing pushes this to 1960s or even 1980's and it ups the chances it's American. You had revivals of this style in both eras. It is all about how it feels in the hand. A 90 year old vase feels its age.

If it was mine I would hope its 1920's but probably think its 1960's. That's a very 60's girl.

just a thought - the VI looks like 1/1 to me

Doesn't the style of numbering suggest European, rather than American? The '4' in particular is very Germanic.

Just to answer the previous couple of comments. The VI looking like 1/1 it could be but you can tell from the picture it has been applied over a glaze and then glazed over again. That normally indicates the vase was plain and then a design was added later. This would suggest its the artists initials rather than a design code.

As for the numbering style. It is indeed very Germanic but that is because nearly all letters are. The Germans has a strong influence in all printing having been pioneers in making the first machines. The fact this has been created using multiple individual stamps rather than a single evenly spread number stamp is not very German. Not to exclude anything though, we still don't know this vases origins.

I wonder if it might be worth your while contacting this group on facebook:
https://www.facebook.com/groups/172064556275668/