Back in the day when I was the manager at Pearson Cycles Sutton, I wore a blue Raleigh overall (coat style; I still have it 😍 ), white shirt, red tie and smart polished leather shoes. We didn't have a 'till' as such, just a wooden drawer with a spring; I hand wrote receipts with a fountain pen.
I recall one chap, a lovely, regular and very loyal customer, he was civil servant of some kind, I assume quite a high ranking as midweek he would often send his chauffeur in to collect things he had ordered from us, including a pair of
'bags trousers' that we stocked as they were one of the first travel clothing companies and I felt a good choice for touring. The trousers were supplied very long, the customer had to cut to length and then use
hemming tape to reduce to the correct length.
A week or so after purchase the civil servant popped in with a sheepish look on his face and asked if we could possibly obtain some material as he had cut far to much off and he felt like a schoolboy still wearing trousers that he had grown too tall for

! To Rohan's credit we were able to get some; one happy customer; for the next few visits I would smile as he entered the store and reference it with some silly banter. One particular visit I didn't mention it at all in any way; but at the bottom of his receipt I wrote "just because I didn't mention it that doesn't mean I have forgotten....", he read it on the way out of the store, laughed loudly, looked back and said "that's why I come here, you won't get that in Marks and Spencer...".
Fast forward to many many years later when the family still had the Sutton store, I popped into to say hello, coincidentally he was in there and asking William Pearson if I still visited, William pointed to me with a chuckle and said "yes, there he is...", at which point smiling he shook my hand and asked if I remembered that story, he then took out his wallet and rooting around in the dingly depths he produced that very receipt, "I keep it Paul just because I like it"; I don't deny that made me feel like a 'million dollars'.