Help with buying more of the same paper

[Reddark]

Hi
I know this is a long shot but I'm hoping someone has an answer. I have (hand) drawn all my maps so far on one big roll of paper I randomly found in my house, and now this paper is running out and I can't find the same thing available anywhere.

It's 10-squares-per-inch graph paper, or 2.5mm, 12mm, 25mm scaling. The roll is 24 inches high with a 1 1/2(ish) plain border on the top and bottom (so total 27 inch). It has "ALLIANCE BRITISH MADE" printed on the border in small blue capitals (both the right way round and in mirrored text for some reason??) if that means anything to anyone, I've googled it to no avail. There is no other branding or logo or information whatsoever, and I don't have any kind of packaging for it that might have info.

The roll used to be quite long but has obviously since been used and cut up so I have no idea what the original length was. The paper looks 'aged' (but I think that it was made like that rather than it was originally white and is now actually old, as there are definite age spots that are a very different colour to the rest of the paper).

I've asked my family and they think the original roll was given to my granddad (for some weather graphs) by my great uncle who worked in the UK Hydrographics Office and thus got the paper from there. Unfortunately the hydrographics office has since then moved online (shows how old this paper is).

The closest I've found online is Frisk A1 Graph Paper 130gsm, with 2mm, 10mm, 20mm scaling. If anyone knows where I can get more, please tell me as it'd be really nice to keep all my maps on the same scale without mismatching colours or sticking lots of A4s together etc. Thank you in advance!!

[Tiana]

Well, I found a couple of papers with the right grid size.
https://www.draftingsteals.com/draft...rid-mylar.html this one is really high end long lasting durable stuff
https://www.draftingsteals.com/catal...rid-rolls.html definitely the wrong color.
These people also have rolls. https://www.clearprintpaperco.com/1000h

Perhaps an unusual option, but it might get you as close as possible to this likely irreplaceable antique. It will take a miracle to find some likely 75 year old archicetural or scientific charting paper. https://www.custompackagingandproduc...-sheets-rolls/ but you can get custom printed butcher paper so somewhere out there, are the connections to have a roll of paper with your own printing on it. As long as you digitize the paper, you can recreate it to scale.

There's a subreddit dedicated to helping people find things, I think it's r/helpmefind, you might try that, some Redditors have far too much spare time.

Also I suppose you could contact the hydrographics office and find out if any supplies are in storage, or if they were auctioned off or sent to an antique house.