Weil McLain Age - new inquiry

[dtontarski]

I just saw a Weil McLain gas fueled boiler on an inspection. The model number was E-10-B and its input was rated at 288K. It has an engraved ID tag, but nothing engraved in the serial number area. I read through the dialogue on this site from January 2006, but I wasn't able to discern the age from this round of discussion. Can anyone give me an approximate age of this unit. I've included a photo.

Thanks.

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