Marantz 240 amp


Question for the group. I am considering purchase of a Marantz 240 amp with the serial number prefix 240b-and number 3317 (240b-3317)  I haven t been able to find any information on the number other than none of the ones I saw had the 250b-xxxx. 
The other thing is the front plate appears to have a etched brushed label, rather than on the face.
I am wondering if anyone could shed some light on this mystery?
Scott

bonzomoon
Thanks for your response. I was thinking maybe a test run of some sort. Btw That weird duck wudda been me! 
Funny there are those out there.. I try not to tempt the "gremlin factor"
No 666, no 13, 1313, or 131313. :-)

Regards