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Tally marks are the oldest interface in the world: four strokes and a fifth across. Michael Anastassiades — trained as a civil engineer before the Royal College of Art — turned that counting system into a building component for Mutina: Tally, an extruded terracotta square of 24×24×10 cm, sliced into longitudinal sections. Wide carries one central line, Narrow four; the outer frame is exactly half the thickness of the inner lines, so however you stack them - horizontally, vertically, mixed - the spacing never stumbles. «A numerical alphabet with a visual dimension», in his words.
The result is a screen wall rather than a wall: partitions up to 4 metres high on the manufacturer's anchoring schemes (two sides up to h250×100 cm, three sides up to h400×300), seven laying schemes, a dedicated solvent-free organic adhesive rated EC 1 plus, and an official installation video. One colour - the natural Argilla of terracotta - declared values to masonry standards (UNI EN 772: absorption 12.5%, frost F1, horizontal loads C2), and a frost-class F2 Outdoor edition from 2025 for courtyards and terraces.
For UK practices it slots where studwork feels heavy-handed: reception thresholds, meeting corners that want daylight, washroom screens with borrowed light. It grew from Fringe - the designer's first ceramic collection for Mutina, here pulled into three dimensions - and took a Hospitality Design Award in Las Vegas for Custom Art + Installations. La Mercanti checks heights against the anchoring schemes, counts the 17.36 bricks per square metre from your elevation, and ships with the VOC A+ and LEED 4.1 papers attached.
Collection: Tally (2024) - Tally Outdoor (2025)
Manufacturer: Mutina
Design: Michael Anastassiades
Material: extruded terracotta brick, artisanal production - category UNI 11128/2004
Format: 24×24×10 cm (9.4×9.4×3.9 in) - 2 models: Wide (two sections) and Narrow (four sections); outer frame half the thickness of the inner lines (constant spacing)
Colour: Argilla
Use: interior partition walls, residential and commercial, up to 4 m (anchoring on 2 sides max h250×100 cm (98.4×39.4 in); on 3 sides max h400×300 cm (157.5×118.1 in); on 2 sides max h400 cm (157.5 in)) - outdoors: Tally Outdoor (frost F2). Local construction standards apply
Installation: 7 laying schemes; Mutina solvent-free organic adhesive (EC 1 plus); official installation video
Declared values (UNI EN 772): dimensions T2-R2 - absorption 12.5% - soluble salts S2 - frost F1 (Outdoor F2) - variable horizontal loads C2
Sustainability: LEED 4.1 10% - VOC emissions A+ - HPD, SDS, BPD3, Declaration of Contents on request
Awards: Hospitality Design Awards Las Vegas, Custom Art + Installations
Logistics: 17.36 pcs/sqm - Narrow 6.5 kg (14 lb)/pc, Wide 3.8 kg (8 lb)/pc
Tell us which finishes you'd like to assess
Up to 4 metres, following the manufacturer's anchoring schemes: fixed on two sides up to h250×100 cm, on three sides up to h400×300 cm, on two sides up to h400. Every wall must also satisfy the construction standards of the country it stands in - a check La Mercanti runs on your drawings before the order is confirmed.
Same square, two densities. Wide is split once, down the centre; Narrow four times. Because the outer frame is half the thickness of the inner lines, any combination - stacked, rotated, mixed - keeps a constant rhythm. One colour, Argilla; the pattern comes from how you compose, and seven published laying schemes give you a grammar to start from.
Indoors - washrooms included, as a screen or dividing panel - the standard collection applies, with declared absorption of 12.5% and a solvent-free sealant. For gardens, courtyards and terraces there is Tally Outdoor (2025), declared frost class F2 under UNI EN 772-22. We match version to exposure on the project, not on the brochure.
It is tidy work rather than exotic work: bricks bond with Mutina's dedicated organic adhesive (EC 1 plus, solvent-free), drips avoided and any excess removed once dry. The manufacturer publishes an installation video, and La Mercanti sends anchoring schemes and instructions with the delivery for your contractor.
A certified VOC A+ emission class, a declared LEED 4.1 contribution of 10%, and HPD, SDS, BPD3 and Declaration of Contents files on request. For projects chasing healthy-materials credits, La Mercanti compiles the pack with the quotation so nothing is chased at submission time.
From function to anchoring scheme - getting Anastassiades' counting brick onto a UK site correctly.
