Please advise what the top mark would have been for part AD5173BRMZ100 for date code 0852. Current picture hard to read. 
AD5173
Production
The AD5172 / AD5173 are dual-channel, 256-position, one-time programmable (OTP) digital potentiometers that employ fuse link technology to achieve memory...
Datasheet
AD5173 on Analog.com
Please advise what the top mark would have been for part AD5173BRMZ100 for date code 0852. Current picture hard to read. 