I tried to buy some coupons from silverleafy too. I bailed when he told me to go to telegram.
Other red flags:
Said will accept PayPal. Then refused saying "i'm not doing PayPal anymore because someone just opened a dispute."
Said will accept escrow. Then went silent when I offered to contact OgNasty. After I asked again - told me to contact him on telegram.
silverleafy had some other threads, GPU sales (very suspect), some deleted threads in currency exchange etc. Basically trying to sell ANYTHING. No real trade feedback, possibly some alts posting in his thread like
Broomy101 newbie account "purchased" coupons with half hour after thread was opened
Skipbay69 another suspect "trader" never interested in miners suddenly "buying" Bitmain coupons
https://bitcointalk.org/index.php?action=profile;u=520321SCAMMER.