Used abbreviations on pages Philashop.cz:
Philately:
4bl. - fourblock stamp
A - stamp sheet
AP - stamp sheet position
bp - paper version(without UV)
D - plate desk number
CDV - postage due stamp
DO - plate different(flaw)
CDV - special delivery stamp
DZ - plate flaw
DZ - plate desk mark
CAE - postal stationery(aerograme)
CDV - postal stationery card
COB - postal stationery cover
CPH - postal stationery postcard
CZA - postal stationery letter card
E-cover - express cover
FDC - first day cover
fl1 - paper version(fluorescent 1)
fl2 - paper version(fluorescent 2)
HZ - comb version perforation
KL - tablet left
KP - tablet right
KD - tablet down
KH - tablet up
Ka - tablet version(3x stamp and one tablet)
L - airmail stamp
lt - tropical gummy
LH - lying comb version perforation
Mi. - Michel catalog number evidence
Mz - gutter
NL - stamp card
NV - newspaper stamp
ORZ - reverse horizont perforation
oz - paper version(with UV)
PA - full stamps sheet form
P1-P8 - watermak version stamps CSR I
OT - stamps for business printed matter
PL - specail sheet form
PT - black print
PTM - black print Post Museum
R-cover - registered cover
RT(RE) - retousch
RZ - horizont perforation
Z - lined perforation
S - this same stamp connection
SK - scout stamp
SL - special stamp booklet sheet form edition
SL - office stamp
SO - plebiscite stamp 1920
St - different stamp connection
ST - connect types
TA - full print stamps sheet form
TD - print desk
TO - tariff period
TV - print flaw
VK1-22 - different stamp and tablet versinons stamp Protectorate BuM and first years Czechoslovakia II
VP(VPO) - perforation flaw
VV - manufacturing flaw
ZP - stamp position on sheet
ZS - stamp booklet
ZSt - stamp booklet inclued special stamp booklet sheet form edition
** - MNH not used stamp
* - MH not used stamp with label
(*) - not used stamp without gummy
Postcards:
VF - large size postcard