Stamps/background information for occasion envelopes2 messages

Can I miss the explanation of the background information on occasion envelopes?

http: //www.catawiki .nl / catalog / stamps / country-areas / 100293-netherlands? page = 1 & amp; field = SO_47 & amp; order = a & amp; external = 0 & amp; view = g & amp; page = 1 & amp; vg = na & amp; type = s & amp; language = nl & amp ; area_id = 100293 & amp; user_id = & amp; stamp_filter = & amp; filters% 5Bin_wish_list% 5D% 2C + = & amp; filters% 5Bin_wish_list% 5D = & amp; filters% 5B7847% 5D = & amp; filters% 5B7845% 5D = & amp; filters% 5 B7857% 5D = & amp; filters% 5B7855% 5D = 381225 & amp; filters% 5B7849% 5D = & amp; filters% 5Byear_from% 5D = & amp; filters% 5Byear_to% 5D = & amp; filters% 5Btitle% 5D = & amp; filters% 5Bsearch_key% 5D =

oh, it's already gone