Legally no. Practically, with unique pieces, it is the difference between finding and searching.
The record-keeping duty in none of the four countries asks for a photo: what is asked is a description, the date, the price and the seller. But with unique pieces a description in words is rarely enough to find one among three hundred — and that is exactly what an inspection or a customer question asks you to do.
A photo next to the purchase price turns a row in a list into a file: this piece, this price, this provenance. Without it the description sits in column C and the image in a folder on your phone, and every question means assembling two things.
There is a second reason. If you sell online you need those images anyway — and a photo taken at purchase shows the condition of the piece before restoration.
Sources, each checked on 30 August 2026: Royal Decree no. 53 of 23 December 1994 (Belgium), the Dutch government's Digitaal Opkopersregister, the registre d'objets mobiliers on service-public.gouv.fr (France) and gov.uk, VAT margin schemes — Keeping records (UK). Note: VAT Notice 718 is still widely quoted online, but HMRC has withdrawn it. This answer deliberately separates what is compulsory (the register data) from what is practical (the image).
This is an explanation, not tax or legal advice. Put your own situation to your accountant.
Then applying the margin scheme correctly becomes difficult or impossible. The scheme taxes the difference between purchase and sale; without a purchase price there is no margin to tax and you fall back on the normal rules: VAT on the full selling price. In the UK, HMRC says so in as many words.
Adding a piece is taking a photo and filling in three fields; the rest can wait. Publish the piece and it appears on the marketplace with its own address, so you can forward or share that link. Marking it sold takes it off the marketplace by itself, without you losing the row.
Vintro Pro keeps, per piece, what you paid, when, and where it came from. Your stock list and your margin VAT build themselves while you work.
Free up to 10 pieces, no card number and no end date.