I wonder if it is still edible?

when did anyone last sell marmalade in tins?

By appointment to the queen?

sadly he isn't available to ask

she

I did ask the company...

Thank you for your email. We appreciate you taking the time to get in touch and your interest in Robertson's products.

We acquired the Robertson's brand in 2013, and were not given access to an archive of historical product information as part of the deal, sorry.

But ... doesn't it say "By appointment" on the top of the can? I can't quite read it.

Lots of history here. Hi LotusCeriano! Haven't seen you in a bit

Pictures of Robertsons Jam works

Along with a concise history of the product

This seems appropriate here:90+ Year Old Vegetable Soup, Oldest Soup Eaten

<snip>Demand grew so massively that a jam factory at Droylesden in Manchester was opened in 1890 to boost production. Jam and mincemeat were later added to the range and the company was given a Royal Warrant in 1933.<unsnip>

it does say Royal Appointment PollyPaperclip

what it doesn't say GingoGumbo is when they marketed that Morning marmalade, I don't recall ever seeing it, my guess is that tin is 70s

I noticed that. I wasn't able to find any mentions of that particular type