A private letter on an ostracon from Iulius to his "brother" Antonius, found at the Roman fort of Didymoi in the Eastern Desert. Iulius sends a whetstone on approval, offering a larger one if it suits, and reports that frankincense is available at Kompasi for 3 staters but not where he is.
In English machine translation
Iulius to Antonius his brother, greetings. You write to me saying, "Send me a whetstone." If it is for iron tools, write to me; but if you are looking for a medical one, there is none here. Receive this whetstone on account. If it pleases you, send me word that it pleases you, and I will send you a bigger one.
About the frankincense, I sent to Kompasi and they say it costs 3 staters. If it is brought, I will send it to you. For here with me there is none.
The word akonion means a whetstone or hone; a "medical" akonion was probably a fine stone used for grinding or applying medicaments. Kompasi was another station on the Koptos to Berenike road.
Working translation of the DDbDP edition, made with Claude Opus 5.5 from the edition and the catalogue records shown below (catalogued as Letters from Iulius to Valerius, Antonius, and Dolens. Sertorius). It has not been reviewed by a papyrologist: check the edition before citing. Restorations follow the edition; […] marks lost text and (?) an uncertain reading.