1931-56 SCOTT #J83A 10 1/2 PERF 5C POSTAGE DUE BLOCK 5 MNH OG #12

Title:
1931-56 SCOTT #J83A 10 1/2 PERF 5C POSTAGE DUE BLOCK 5 MNH OG #12
See scans
for centering, condition and cancellation details.
Additional
details: 
excellent condition as shown. 
MNH OG
Only my option (varies per issue) please judge scans. Ask questions 
BEFORE
 bidding
 
                
Centering
      
Condition
      
Eye appeal
P              uncentered     poor
quality    some
damage
Fair         off centered some condition issues
Good      
no margins on one or more sides, better eye appeal
VG
Fine         two edges may touch margins
F/VF        slightly off centered
VF           well
centered ample margins      
                 
VF/XF      well centered all 4 margins
XF           well centered         margins are well balanced
XF/S        95% + perfect
Superb    scarce grade perfect in 99% of all aspects
Gem        ?
·
      
Mint never-hinged
 (
MNH
 or 
Mint
NH
, 
NH
, 
u/m
)
is an unused stamp that has full original undisturbed gum with
no trace of damage done by a s