I've been keeping an eye out for certain items in the hustler cash shop (the little header advert) but I don't know if I've missed items.

Is there anywhere to see the history of the recent items sold?

Unless someone's keeping track privately, I haven't seen anything. I checked groups and while there are a couple of hustler ping groups none of them seem to have been updated recently. Like this Cash Shop Hustler RS Pinging v2.0! tracked the info in 2015 and not since

I checked the general forum and didn't see anything on the first page. I didn't find anything in a google search either.

Staff probably have the info in a database, so you might try submitting a ticket and asking them.

There's also a thread in Suggestions ->Items You can riffle through it and look for pink posts by staff to see if they have agreed to re-issue anything. This way you can frame your request in Help better.