identfy mark

[jasmin]

dear friends ,
this is a small bowl could any one pls identify this mark ?
I try my best and I failed
the bowl also have some other letters if you like I can send pic for it its not stamped
thanks a lot

[zhaosu]

The mark is Laobaoqing (老寶慶, old Baoqing), name of a retailer, probably in Shanghai, though this name was common used by many firms founded by Zhejiang native merchants in many provinces. The bowl was made in 1920s-40s.