The first publication of a drawing of the monument with the inscription seems to be by Jean Jacques Boissard, VI. pars. Antiquitatum Romanarum : sive IIII. tomus inscriptionum & monumentorum (Frankfurt: apud Iohannem Feyrabend, impensis Theodori de Bry, 1602), figure 36 (see below). Boissard reports that this monument was found near the Flaminian Gate by the Julian gardens (Porta Flaminia). Janus Gruterus and Johannes Georgius Graevius reproduce that drawing by Boissard and provide a facsimile (see below): Gruterus and Graevius, Inscriptiones antiquae totius orbis Romani (Halma, 1707). Bernard de Montfaucon also reproduces Boissard's drawing: Bernard de Montfaucon, L’ antiquité expliquée et représentée en figures: Antiquitas explenatiore et schematibus illustrata (I.2): Les dieux des grecs et des romains, vol. 1.2 (Paris, 1722), plate 180. De Montfaucon also reproduces Boissard's imaginative depiction of a scene of Priapos worship (see below).

In IG XIV, Kaibel placed this inscription under the "forgery" or "suspected forgery" section without any explanation. It is possible that the monument (if authentic) was originally from Lampsakos, but the term koinõnia is not found used at Lampsakos itself (see ILampsakos). So (if authentic) the Lampsakenes here are likely immigrants to Rome from Lampsakos (in Mysia), where Priapos was a patron deity of the city (see ILampsakos 7, line 9; Pausanias, Description of Greece 9.31.2). This confirmed connection between Lampsakos and Priapos may suggest authenticity (or a pre-17th century forgery that was very well researched and built on obscure information).

The relief depicts a god with an erect phallus in the form of a monument with a club on the top left of the monument, a sickle on the top right, fruit baskets on the left and right in the middle, a knife or garden implement on both sides towards the bottom of the monument in relief, and two goat (?) heads at the bottom. The inscription appears at the base.