aircraft serial numbers
OY-RAX 28/294
OY-XRG 6217
OY-XRF 4788
OY-XPX 4654
OY-XPD 4-183
OY-RGX 101,AO.77
Strange to take gliders and leave trailers behind. I would be very suspicious of anybody eager to buy a trailer - which then will need work to fit to the glider.
Did they take the logbooks?
The original logbooks would be evidence of guilt. Cooking up 10-25 years of phony logbook entries will be a challenge.
Without skillful packing, there's a good chance that the gliders will be damaged in transit..