Need info on gene make up for SL Polish

[StrawberryHouseMouse]

What color genes are involved in making the silver laced polish variety?

 

[Krys109uk]

ER/ER, (Birchen)
S/S (or S/-), (sex linked silver)
Co/Co, Columbian
Pg-Ml/Pg-ML, Pattern gene & Melanotic .....linked meaning on same chromosome, in this case reasonably close.
bl+/bl+. (not blue)

 

[StrawberryHouseMouse]

Thank you thats great help!