Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
List of hoards in the Channel Islands
Table title:
Roman hoards
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Hoard </th><th colspan=1 rowspan=1 > Image </th><th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Place of discovery </th><th colspan=1 rowspan=1 > Year of discovery </th><th colspan=1 rowspan=1 > Current Location </th><th colspan=1 rowspan=1 > Contents </th></tr>
<tr> <td colspan=1 rowspan=1 > Île Agois Hoard </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > mid 3rd century </td><td colspan=1 rowspan=1 > Île Agois, Saint Mary Jersey 49°14′56″N 2°10′55″W / 49.249°N 2.182°W </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 18 antoniniani, dated A.D. 253–268, in a pot </td></tr>
<tr> <td colspan=1 rowspan=1 > Jerbourg Hoard </td><td colspan=1 rowspan=1 >  </td><td class="highlighted"  colspan=1 rowspan=1 > late 3rd century </td><td colspan=1 rowspan=1 > Jerbourg Point, Saint Martin Guernsey 49°25′30″N 2°32′06″W / 49.425°N 2.535°W </td><td colspan=1 rowspan=1 > before 1890 </td><td colspan=1 rowspan=1 > Dispersed </td><td class="highlighted"  colspan=1 rowspan=1 > 68 tetradrachms minted in Alexandria during the reigns of the emperors Probus (4 coins), Carus (3 coins), Numerian (3 coins), Carinus (4 coins), Diocletian (34 coins) and Maximian (19 coins) </td></tr>
<tr> <td colspan=1 rowspan=1 > Quennevais Hoard </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > mid 4th century </td><td colspan=1 rowspan=1 > Les Quennevais, Saint Brélade Jersey 49°11′49″N 2°11′38″W / 49.197°N 2.194°W </td><td colspan=1 rowspan=1 > 1848 </td><td colspan=1 rowspan=1 > Jersey Museum (264 coins) </td><td colspan=1 rowspan=1 > about 400 coins in a pot, mainly Roman folles dated A.D. 290–354 </td></tr>
<tr> <td colspan=1 rowspan=1 > Sark Hoard </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 1st century B.C. </td><td colspan=1 rowspan=1 > La Vaurocque Sark 49°25′48″N 2°21′54″W / 49.430°N 2.365°W </td><td colspan=1 rowspan=1 > 1719 </td><td colspan=1 rowspan=1 > Lost </td><td colspan=1 rowspan=1 > 18 Roman and Gaulish silver coins, a silver mount in the form of a dolphin, and 13 silver or silver-gilt phalerae in an iron-bound pottery urn </td></tr>
</table>
Question:
What does a Roman hoard from the late 3rd century contain?
Answer:
A Roman Jerbourg Hoard, dating from the late 3rd century contains 68 tetradrachms minted in Alexandria during the reigns of the emperors Probus (4 coins), Carus (3 coins), Numerian (3 coins), Carinus (4 coins), Diocletian (34 coins) and Maximian (19 coins).