Hi Tony, bring the Slavia (amongst others) if you can. You could transport them by using bubble wrap, a blanket and lengths of cardboard as dividers.
I’ll try and bring some open sighters including a Slavia34, Falke 80 and 90, pre war Langenham FLZ, BSA Mk1Airsporter Club .177 and Mk1 .22 and a Greener and prewar Diana 27 and a BSA underlever amongst others, all going well.....Oh aye, and a Relum Tornado!😎