1870 French Cochin China PCGS SP 63 BN

Send a picture to Heritage - perhaps they may be able to confirm. Looks to be a pattern after the cash style of Chinese coins. May have been made in France.
My go-to in Sydney is Noble Numismatics.
I have a feeling that this item may be rather pricey, especially in this condition.
Not illustrated under French Cochin China, in my rather older copy of 19th Century Krause.

Perhaps Sap or gxseries (CCF members), may see this thread.

Trial machine-struck cash coins by Dietrich Uhlhorn

A company in Grevenbroich, Prussia originally founded by Diedrich Uhlhorn and at the time run by his son Heinrich Uhlhorn attempted to produce a machine-struck T#7921; #272;#7913;c Thông B#7843;o cash coin, the coin shows the manufacture date of 1870 although it is uncertain if the coin was actually produced in this year as no records mention it, the obverse inscription reads "T#7921; #272;#7913;c Thông B#7843;o", the Chinese calligraphy on the coin is comes very close for a person with no skills in writing Chinese as the coin was produced in North Germany. While the reverse inscription reads "ECHANTILLON DE D. UHLHORN 1870" (Sample coin of D. Uhlhorn, 1870). The coin weighs 4 grams to match the Vietnamese weight of 10 ph#7847;n which is 3.7783 grams. As it was deemed too expensive to ship these coins from North Germany to Saigon in French Cochin China the effort to privately produce these coins was discontinued and all subsequent machine-struck cash coins produced were made by the French government.[13] It is possible that the coin was a test strike for Nguy#7877;n Ð#7913;c H#7853;u who requested the court of the Nguy#7877;n dynasty permission to purchase coin presses from Europe to produce machine-struck coins but this request was ultimate turned down by the court. During this same period machine presses were being imported into the Qing dynasty where machine-struck cash coins would later become a common sight, while in Vietnam this wouldn't happen until the introduction of the Machine-struck Kh#7843;i #272;#7883;nh Thông B#7843;o (#21843;#23450;#36890;#23542;) in 1921.[11]

https://en.wikipedia.org/wiki/T#792...2;#7913;c_Thông_B#7843;o