Has anyone come across one of these before

 Slightly similar > 

https://www.cgbfr.net/aulerques-cenomans-region-du-mans-denier-a-la-tete-casquee-a-droite-ttb-,bga_879565,a.html 

 and then found this, with the wheel below 

https://www.cgb.fr/aulerques-cenomans-region-du-mans-denier-a-la-tete-casquee-a-droite-a-la-roue-perlee-sup,bga_783151,a.html 

 That second page > 

 Quote: 

Obverse title: ANÉPIGRAPHE.
Obverse description: Head facing right, with helmet with crest and plume with visor raised.

Reverse inscription: ANÉPIGRAPHE.
Reverse description: Free horse galloping to the right, a victory above the rump; in front of 

the horse a cross with pellet-shaped ends; between the legs, a four-spoked wheel.

AULERQUES CÉNOMANS (Le Mans region) (2nd - 1st century BC)
The Aulerci were a very large people, subdivided into three main tribes, 

including the Aulerci Cenomani, who were located southeast of the Aulerci Diablintes 

(Mayenne basin), in what is now the Sarthe department. Their Gallo-Roman city, Vindunum, 

perpetuates their name in the form of Le Mans. In 52 BC, they provided a contingent of five 

thousand men for Vercingetorix's relief army, besieged in Alesia. 

(Caesar, BG. VII, 75; Kruta: 72, 187, 266) 

Much appreciated do you know a rough value of mine 

it’s a bit more weight than the two above 

thanks

 Already there - in my reply that gave two links, 

they have prices on right of page.